staging: lustre: Avoid nid range related forward declarations in nidstring.c
Since forward declarations are frowned on upstream we move the NID range handling to near the start of the nidstring.c file. Signed-off-by: James Simmons <uja.ornl@yahoo.com> Reviewed-on: http://review.whamcloud.com/15086 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245 Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com> Reviewed-by: Bob Glossman <bob.glossman@intel.com> Reviewed-by: John L. Hammond <john.hammond@intel.com> Reviewed-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Simmons
Greg Kroah-Hartman
parent
c1af01da79
commit
e8834329bb
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@ -63,6 +63,8 @@ static int libcfs_nidstring_idx;
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static DEFINE_SPINLOCK(libcfs_nidstring_lock);
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static struct netstrfns *libcfs_namenum2netstrfns(const char *name);
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char *
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libcfs_next_nidstring(void)
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{
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@ -80,20 +82,403 @@ libcfs_next_nidstring(void)
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}
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EXPORT_SYMBOL(libcfs_next_nidstring);
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static int libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
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/**
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* Nid range list syntax.
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* \verbatim
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*
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* <nidlist> :== <nidrange> [ ' ' <nidrange> ]
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* <nidrange> :== <addrrange> '@' <net>
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* <addrrange> :== '*' |
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* <ipaddr_range> |
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* <cfs_expr_list>
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* <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>.
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* <cfs_expr_list>
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* <cfs_expr_list> :== <number> |
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* <expr_list>
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* <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']'
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* <range_expr> :== <number> |
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* <number> '-' <number> |
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* <number> '-' <number> '/' <number>
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* <net> :== <netname> | <netname><number>
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* <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" |
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* "vib" | "ra" | "elan" | "mx" | "ptl"
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* \endverbatim
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*/
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/**
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* Structure to represent \<nidrange\> token of the syntax.
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*
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* One of this is created for each \<net\> parsed.
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*/
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struct nidrange {
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/**
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* Link to list of this structures which is built on nid range
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* list parsing.
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*/
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struct list_head nr_link;
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/**
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* List head for addrrange::ar_link.
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*/
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struct list_head nr_addrranges;
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/**
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* Flag indicating that *@<net> is found.
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*/
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int nr_all;
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/**
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* Pointer to corresponding element of libcfs_netstrfns.
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*/
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struct netstrfns *nr_netstrfns;
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/**
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* Number of network. E.g. 5 if \<net\> is "elan5".
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*/
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int nr_netnum;
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};
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/**
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* Structure to represent \<addrrange\> token of the syntax.
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*/
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struct addrrange {
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/**
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* Link to nidrange::nr_addrranges.
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*/
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struct list_head ar_link;
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/**
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* List head for cfs_expr_list::el_list.
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*/
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struct list_head ar_numaddr_ranges;
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};
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/**
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* Parses \<addrrange\> token on the syntax.
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*
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* Allocates struct addrrange and links to \a nidrange via
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* (nidrange::nr_addrranges)
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*
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* \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\>
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* \retval -errno otherwise
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*/
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static int
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parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange)
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{
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struct addrrange *addrrange;
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if (src->ls_len == 1 && src->ls_str[0] == '*') {
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nidrange->nr_all = 1;
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return 0;
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}
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LIBCFS_ALLOC(addrrange, sizeof(struct addrrange));
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if (addrrange == NULL)
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return -ENOMEM;
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list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges);
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INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges);
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return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str,
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src->ls_len,
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&addrrange->ar_numaddr_ranges);
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}
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/**
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* Finds or creates struct nidrange.
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*
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* Checks if \a src is a valid network name, looks for corresponding
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* nidrange on the ist of nidranges (\a nidlist), creates new struct
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* nidrange if it is not found.
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*
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* \retval pointer to struct nidrange matching network specified via \a src
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* \retval NULL if \a src does not match any network
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*/
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static struct nidrange *
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add_nidrange(const struct cfs_lstr *src,
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struct list_head *nidlist)
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{
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struct netstrfns *nf;
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struct nidrange *nr;
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int endlen;
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unsigned netnum;
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if (src->ls_len >= LNET_NIDSTR_SIZE)
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return NULL;
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nf = libcfs_namenum2netstrfns(src->ls_str);
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if (nf == NULL)
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return NULL;
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endlen = src->ls_len - strlen(nf->nf_name);
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if (endlen == 0)
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/* network name only, e.g. "elan" or "tcp" */
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netnum = 0;
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else {
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/* e.g. "elan25" or "tcp23", refuse to parse if
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* network name is not appended with decimal or
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* hexadecimal number */
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if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name),
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endlen, &netnum, 0, MAX_NUMERIC_VALUE))
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return NULL;
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}
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list_for_each_entry(nr, nidlist, nr_link) {
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if (nr->nr_netstrfns != nf)
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continue;
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if (nr->nr_netnum != netnum)
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continue;
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return nr;
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}
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LIBCFS_ALLOC(nr, sizeof(struct nidrange));
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if (nr == NULL)
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return NULL;
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list_add_tail(&nr->nr_link, nidlist);
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INIT_LIST_HEAD(&nr->nr_addrranges);
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nr->nr_netstrfns = nf;
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nr->nr_all = 0;
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nr->nr_netnum = netnum;
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return nr;
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}
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/**
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* Parses \<nidrange\> token of the syntax.
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*
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* \retval 1 if \a src parses to \<addrrange\> '@' \<net\>
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* \retval 0 otherwise
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*/
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static int
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parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
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{
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struct cfs_lstr addrrange;
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struct cfs_lstr net;
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struct cfs_lstr tmp;
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struct nidrange *nr;
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tmp = *src;
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if (cfs_gettok(src, '@', &addrrange) == 0)
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goto failed;
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if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL)
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goto failed;
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nr = add_nidrange(&net, nidlist);
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if (nr == NULL)
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goto failed;
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if (parse_addrange(&addrrange, nr) != 0)
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goto failed;
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return 1;
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failed:
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CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str);
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return 0;
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}
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/**
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* Frees addrrange structures of \a list.
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*
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* For each struct addrrange structure found on \a list it frees
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* cfs_expr_list list attached to it and frees the addrrange itself.
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*
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* \retval none
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*/
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static void
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free_addrranges(struct list_head *list)
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{
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while (!list_empty(list)) {
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struct addrrange *ar;
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ar = list_entry(list->next, struct addrrange, ar_link);
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cfs_expr_list_free_list(&ar->ar_numaddr_ranges);
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list_del(&ar->ar_link);
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LIBCFS_FREE(ar, sizeof(struct addrrange));
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}
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}
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/**
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* Frees nidrange strutures of \a list.
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*
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* For each struct nidrange structure found on \a list it frees
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* addrrange list attached to it and frees the nidrange itself.
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*
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* \retval none
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*/
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void
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cfs_free_nidlist(struct list_head *list)
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{
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struct list_head *pos, *next;
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struct nidrange *nr;
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list_for_each_safe(pos, next, list) {
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nr = list_entry(pos, struct nidrange, nr_link);
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free_addrranges(&nr->nr_addrranges);
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list_del(pos);
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LIBCFS_FREE(nr, sizeof(struct nidrange));
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}
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}
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EXPORT_SYMBOL(cfs_free_nidlist);
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/**
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* Parses nid range list.
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*
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* Parses with rigorous syntax and overflow checking \a str into
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* \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of
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* structures and links that structure to \a nidlist. The resulting
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* list can be used to match a NID againts set of NIDS defined by \a
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* str.
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* \see cfs_match_nid
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*
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* \retval 1 on success
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* \retval 0 otherwise
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*/
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int
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cfs_parse_nidlist(char *str, int len, struct list_head *nidlist)
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{
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struct cfs_lstr src;
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struct cfs_lstr res;
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int rc;
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src.ls_str = str;
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src.ls_len = len;
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INIT_LIST_HEAD(nidlist);
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while (src.ls_str) {
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rc = cfs_gettok(&src, ' ', &res);
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if (rc == 0) {
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cfs_free_nidlist(nidlist);
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return 0;
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}
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rc = parse_nidrange(&res, nidlist);
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if (rc == 0) {
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cfs_free_nidlist(nidlist);
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return 0;
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}
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}
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return 1;
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}
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EXPORT_SYMBOL(cfs_parse_nidlist);
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/**
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* Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
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*
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* \see cfs_parse_nidlist()
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*
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* \retval 1 on match
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* \retval 0 otherwises
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*/
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int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist)
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{
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struct nidrange *nr;
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struct addrrange *ar;
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list_for_each_entry(nr, nidlist, nr_link) {
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if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid)))
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continue;
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if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid)))
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continue;
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if (nr->nr_all)
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return 1;
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list_for_each_entry(ar, &nr->nr_addrranges, ar_link)
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if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid),
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&ar->ar_numaddr_ranges))
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return 1;
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}
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return 0;
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}
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EXPORT_SYMBOL(cfs_match_nid);
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/**
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* Print the network part of the nidrange \a nr into the specified \a buffer.
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*
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* \retval number of characters written
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*/
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static int
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cfs_print_network(char *buffer, int count, struct nidrange *nr)
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{
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struct netstrfns *nf = nr->nr_netstrfns;
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if (nr->nr_netnum == 0)
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return scnprintf(buffer, count, "@%s", nf->nf_name);
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else
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return scnprintf(buffer, count, "@%s%u",
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nf->nf_name, nr->nr_netnum);
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}
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/**
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* Print a list of addrrange (\a addrranges) into the specified \a buffer.
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* At max \a count characters can be printed into \a buffer.
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*
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* \retval number of characters written
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*/
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static int
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cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges,
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struct nidrange *nr)
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{
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int i = 0;
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struct addrrange *ar;
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struct netstrfns *nf = nr->nr_netstrfns;
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list_for_each_entry(ar, addrranges, ar_link) {
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if (i != 0)
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i += scnprintf(buffer + i, count - i, " ");
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i += nf->nf_print_addrlist(buffer + i, count - i,
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&ar->ar_numaddr_ranges);
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i += cfs_print_network(buffer + i, count - i, nr);
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}
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return i;
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}
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/**
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* Print a list of nidranges (\a nidlist) into the specified \a buffer.
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* At max \a count characters can be printed into \a buffer.
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* Nidranges are separated by a space character.
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*
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* \retval number of characters written
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*/
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int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist)
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{
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int i = 0;
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struct nidrange *nr;
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if (count <= 0)
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return 0;
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list_for_each_entry(nr, nidlist, nr_link) {
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if (i != 0)
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i += scnprintf(buffer + i, count - i, " ");
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if (nr->nr_all != 0) {
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LASSERT(list_empty(&nr->nr_addrranges));
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i += scnprintf(buffer + i, count - i, "*");
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i += cfs_print_network(buffer + i, count - i, nr);
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} else {
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i += cfs_print_addrranges(buffer + i, count - i,
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&nr->nr_addrranges, nr);
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}
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}
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return i;
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}
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EXPORT_SYMBOL(cfs_print_nidlist);
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static int
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libcfs_lo_str2addr(const char *str, int nob, __u32 *addr)
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{
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*addr = 0;
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return 1;
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}
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static void libcfs_ip_addr2str(__u32 addr, char *str)
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static void
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libcfs_ip_addr2str(__u32 addr, char *str)
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{
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snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
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(addr >> 24) & 0xff, (addr >> 16) & 0xff,
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(addr >> 8) & 0xff, addr & 0xff);
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}
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static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
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/* CAVEAT EMPTOR XscanfX
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* I use "%n" at the end of a sscanf format to detect trailing junk. However
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* sscanf may return immediately if it sees the terminating '0' in a string, so
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* I initialise the %n variable to the expected length. If sscanf sets it;
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* fine, if it doesn't, then the scan ended at the end of the string, which is
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* fine too :) */
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static int
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libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
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{
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unsigned int a;
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unsigned int b;
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@ -113,6 +498,7 @@ static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr)
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return 0;
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}
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/* Used by lnet/config.c so it can't be static */
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int
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cfs_ip_addr_parse(char *str, int len, struct list_head *list)
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{
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|
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@ -188,17 +574,20 @@ cfs_ip_addr_match(__u32 addr, struct list_head *list)
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return i == 4;
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}
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static void libcfs_decnum_addr2str(__u32 addr, char *str)
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static void
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libcfs_decnum_addr2str(__u32 addr, char *str)
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{
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snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
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}
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static void libcfs_hexnum_addr2str(__u32 addr, char *str)
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static void
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libcfs_hexnum_addr2str(__u32 addr, char *str)
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{
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snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
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}
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static int libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
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static int
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libcfs_num_str2addr(const char *str, int nob, __u32 *addr)
|
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{
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int n;
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|
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@ -379,13 +768,6 @@ static struct netstrfns libcfs_netstrfns[] = {
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static const int libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns);
|
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|
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/* CAVEAT EMPTOR XscanfX
|
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* I use "%n" at the end of a sscanf format to detect trailing junk. However
|
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* sscanf may return immediately if it sees the terminating '0' in a string, so
|
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* I initialise the %n variable to the expected length. If sscanf sets it;
|
||||
* fine, if it doesn't, then the scan ended at the end of the string, which is
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* fine too :) */
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static struct netstrfns *
|
||||
libcfs_lnd2netstrfns(int lnd)
|
||||
{
|
||||
|
|
@ -628,377 +1010,3 @@ libcfs_str2anynid(lnet_nid_t *nidp, const char *str)
|
|||
return *nidp != LNET_NID_ANY;
|
||||
}
|
||||
EXPORT_SYMBOL(libcfs_str2anynid);
|
||||
|
||||
/**
|
||||
* Nid range list syntax.
|
||||
* \verbatim
|
||||
*
|
||||
* <nidlist> :== <nidrange> [ ' ' <nidrange> ]
|
||||
* <nidrange> :== <addrrange> '@' <net>
|
||||
* <addrrange> :== '*' |
|
||||
* <ipaddr_range> |
|
||||
* <cfs_expr_list>
|
||||
* <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>.
|
||||
* <cfs_expr_list>
|
||||
* <cfs_expr_list> :== <number> |
|
||||
* <expr_list>
|
||||
* <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']'
|
||||
* <range_expr> :== <number> |
|
||||
* <number> '-' <number> |
|
||||
* <number> '-' <number> '/' <number>
|
||||
* <net> :== <netname> | <netname><number>
|
||||
* <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" |
|
||||
* "vib" | "ra" | "elan" | "mx" | "ptl"
|
||||
* \endverbatim
|
||||
*/
|
||||
|
||||
/**
|
||||
* Structure to represent \<nidrange\> token of the syntax.
|
||||
*
|
||||
* One of this is created for each \<net\> parsed.
|
||||
*/
|
||||
struct nidrange {
|
||||
/**
|
||||
* Link to list of this structures which is built on nid range
|
||||
* list parsing.
|
||||
*/
|
||||
struct list_head nr_link;
|
||||
/**
|
||||
* List head for addrrange::ar_link.
|
||||
*/
|
||||
struct list_head nr_addrranges;
|
||||
/**
|
||||
* Flag indicating that *@<net> is found.
|
||||
*/
|
||||
int nr_all;
|
||||
/**
|
||||
* Pointer to corresponding element of libcfs_netstrfns.
|
||||
*/
|
||||
struct netstrfns *nr_netstrfns;
|
||||
/**
|
||||
* Number of network. E.g. 5 if \<net\> is "elan5".
|
||||
*/
|
||||
int nr_netnum;
|
||||
};
|
||||
|
||||
/**
|
||||
* Structure to represent \<addrrange\> token of the syntax.
|
||||
*/
|
||||
struct addrrange {
|
||||
/**
|
||||
* Link to nidrange::nr_addrranges.
|
||||
*/
|
||||
struct list_head ar_link;
|
||||
/**
|
||||
* List head for cfs_expr_list::el_list.
|
||||
*/
|
||||
struct list_head ar_numaddr_ranges;
|
||||
};
|
||||
|
||||
/**
|
||||
* Parses \<addrrange\> token on the syntax.
|
||||
*
|
||||
* Allocates struct addrrange and links to \a nidrange via
|
||||
* (nidrange::nr_addrranges)
|
||||
*
|
||||
* \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\>
|
||||
* \retval -errno otherwise
|
||||
*/
|
||||
static int
|
||||
parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange)
|
||||
{
|
||||
struct addrrange *addrrange;
|
||||
|
||||
if (src->ls_len == 1 && src->ls_str[0] == '*') {
|
||||
nidrange->nr_all = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
LIBCFS_ALLOC(addrrange, sizeof(struct addrrange));
|
||||
if (addrrange == NULL)
|
||||
return -ENOMEM;
|
||||
list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges);
|
||||
INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges);
|
||||
|
||||
return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str,
|
||||
src->ls_len,
|
||||
&addrrange->ar_numaddr_ranges);
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds or creates struct nidrange.
|
||||
*
|
||||
* Checks if \a src is a valid network name, looks for corresponding
|
||||
* nidrange on the ist of nidranges (\a nidlist), creates new struct
|
||||
* nidrange if it is not found.
|
||||
*
|
||||
* \retval pointer to struct nidrange matching network specified via \a src
|
||||
* \retval NULL if \a src does not match any network
|
||||
*/
|
||||
static struct nidrange *
|
||||
add_nidrange(const struct cfs_lstr *src,
|
||||
struct list_head *nidlist)
|
||||
{
|
||||
struct netstrfns *nf;
|
||||
struct nidrange *nr;
|
||||
int endlen;
|
||||
unsigned netnum;
|
||||
|
||||
if (src->ls_len >= LNET_NIDSTR_SIZE)
|
||||
return NULL;
|
||||
|
||||
nf = libcfs_namenum2netstrfns(src->ls_str);
|
||||
if (nf == NULL)
|
||||
return NULL;
|
||||
endlen = src->ls_len - strlen(nf->nf_name);
|
||||
if (endlen == 0)
|
||||
/* network name only, e.g. "elan" or "tcp" */
|
||||
netnum = 0;
|
||||
else {
|
||||
/* e.g. "elan25" or "tcp23", refuse to parse if
|
||||
* network name is not appended with decimal or
|
||||
* hexadecimal number */
|
||||
if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name),
|
||||
endlen, &netnum, 0, MAX_NUMERIC_VALUE))
|
||||
return NULL;
|
||||
}
|
||||
|
||||
list_for_each_entry(nr, nidlist, nr_link) {
|
||||
if (nr->nr_netstrfns != nf)
|
||||
continue;
|
||||
if (nr->nr_netnum != netnum)
|
||||
continue;
|
||||
return nr;
|
||||
}
|
||||
|
||||
LIBCFS_ALLOC(nr, sizeof(struct nidrange));
|
||||
if (nr == NULL)
|
||||
return NULL;
|
||||
list_add_tail(&nr->nr_link, nidlist);
|
||||
INIT_LIST_HEAD(&nr->nr_addrranges);
|
||||
nr->nr_netstrfns = nf;
|
||||
nr->nr_all = 0;
|
||||
nr->nr_netnum = netnum;
|
||||
|
||||
return nr;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parses \<nidrange\> token of the syntax.
|
||||
*
|
||||
* \retval 1 if \a src parses to \<addrrange\> '@' \<net\>
|
||||
* \retval 0 otherwise
|
||||
*/
|
||||
static int
|
||||
parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
|
||||
{
|
||||
struct cfs_lstr addrrange;
|
||||
struct cfs_lstr net;
|
||||
struct cfs_lstr tmp;
|
||||
struct nidrange *nr;
|
||||
|
||||
tmp = *src;
|
||||
if (cfs_gettok(src, '@', &addrrange) == 0)
|
||||
goto failed;
|
||||
|
||||
if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL)
|
||||
goto failed;
|
||||
|
||||
nr = add_nidrange(&net, nidlist);
|
||||
if (nr == NULL)
|
||||
goto failed;
|
||||
|
||||
if (parse_addrange(&addrrange, nr) != 0)
|
||||
goto failed;
|
||||
|
||||
return 1;
|
||||
failed:
|
||||
CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Frees addrrange structures of \a list.
|
||||
*
|
||||
* For each struct addrrange structure found on \a list it frees
|
||||
* cfs_expr_list list attached to it and frees the addrrange itself.
|
||||
*
|
||||
* \retval none
|
||||
*/
|
||||
static void
|
||||
free_addrranges(struct list_head *list)
|
||||
{
|
||||
while (!list_empty(list)) {
|
||||
struct addrrange *ar;
|
||||
|
||||
ar = list_entry(list->next, struct addrrange, ar_link);
|
||||
|
||||
cfs_expr_list_free_list(&ar->ar_numaddr_ranges);
|
||||
list_del(&ar->ar_link);
|
||||
LIBCFS_FREE(ar, sizeof(struct addrrange));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Frees nidrange strutures of \a list.
|
||||
*
|
||||
* For each struct nidrange structure found on \a list it frees
|
||||
* addrrange list attached to it and frees the nidrange itself.
|
||||
*
|
||||
* \retval none
|
||||
*/
|
||||
void
|
||||
cfs_free_nidlist(struct list_head *list)
|
||||
{
|
||||
struct list_head *pos, *next;
|
||||
struct nidrange *nr;
|
||||
|
||||
list_for_each_safe(pos, next, list) {
|
||||
nr = list_entry(pos, struct nidrange, nr_link);
|
||||
free_addrranges(&nr->nr_addrranges);
|
||||
list_del(pos);
|
||||
LIBCFS_FREE(nr, sizeof(struct nidrange));
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL(cfs_free_nidlist);
|
||||
|
||||
/**
|
||||
* Parses nid range list.
|
||||
*
|
||||
* Parses with rigorous syntax and overflow checking \a str into
|
||||
* \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of
|
||||
* structures and links that structure to \a nidlist. The resulting
|
||||
* list can be used to match a NID againts set of NIDS defined by \a
|
||||
* str.
|
||||
* \see cfs_match_nid
|
||||
*
|
||||
* \retval 1 on success
|
||||
* \retval 0 otherwise
|
||||
*/
|
||||
int
|
||||
cfs_parse_nidlist(char *str, int len, struct list_head *nidlist)
|
||||
{
|
||||
struct cfs_lstr src;
|
||||
struct cfs_lstr res;
|
||||
int rc;
|
||||
|
||||
src.ls_str = str;
|
||||
src.ls_len = len;
|
||||
INIT_LIST_HEAD(nidlist);
|
||||
while (src.ls_str) {
|
||||
rc = cfs_gettok(&src, ' ', &res);
|
||||
if (rc == 0) {
|
||||
cfs_free_nidlist(nidlist);
|
||||
return 0;
|
||||
}
|
||||
rc = parse_nidrange(&res, nidlist);
|
||||
if (rc == 0) {
|
||||
cfs_free_nidlist(nidlist);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
EXPORT_SYMBOL(cfs_parse_nidlist);
|
||||
|
||||
/**
|
||||
* Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist).
|
||||
*
|
||||
* \see cfs_parse_nidlist()
|
||||
*
|
||||
* \retval 1 on match
|
||||
* \retval 0 otherwises
|
||||
*/
|
||||
int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist)
|
||||
{
|
||||
struct nidrange *nr;
|
||||
struct addrrange *ar;
|
||||
|
||||
list_for_each_entry(nr, nidlist, nr_link) {
|
||||
if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid)))
|
||||
continue;
|
||||
if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid)))
|
||||
continue;
|
||||
if (nr->nr_all)
|
||||
return 1;
|
||||
list_for_each_entry(ar, &nr->nr_addrranges, ar_link)
|
||||
if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid),
|
||||
&ar->ar_numaddr_ranges))
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(cfs_match_nid);
|
||||
|
||||
/**
|
||||
* Print the network part of the nidrange \a nr into the specified \a buffer.
|
||||
*
|
||||
* \retval number of characters written
|
||||
*/
|
||||
static int
|
||||
cfs_print_network(char *buffer, int count, struct nidrange *nr)
|
||||
{
|
||||
struct netstrfns *nf = nr->nr_netstrfns;
|
||||
|
||||
if (nr->nr_netnum == 0)
|
||||
return scnprintf(buffer, count, "@%s", nf->nf_name);
|
||||
else
|
||||
return scnprintf(buffer, count, "@%s%u",
|
||||
nf->nf_name, nr->nr_netnum);
|
||||
}
|
||||
|
||||
/**
|
||||
* Print a list of addrrange (\a addrranges) into the specified \a buffer.
|
||||
* At max \a count characters can be printed into \a buffer.
|
||||
*
|
||||
* \retval number of characters written
|
||||
*/
|
||||
static int
|
||||
cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges,
|
||||
struct nidrange *nr)
|
||||
{
|
||||
int i = 0;
|
||||
struct addrrange *ar;
|
||||
struct netstrfns *nf = nr->nr_netstrfns;
|
||||
|
||||
list_for_each_entry(ar, addrranges, ar_link) {
|
||||
if (i != 0)
|
||||
i += scnprintf(buffer + i, count - i, " ");
|
||||
i += nf->nf_print_addrlist(buffer + i, count - i,
|
||||
&ar->ar_numaddr_ranges);
|
||||
i += cfs_print_network(buffer + i, count - i, nr);
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
/**
|
||||
* Print a list of nidranges (\a nidlist) into the specified \a buffer.
|
||||
* At max \a count characters can be printed into \a buffer.
|
||||
* Nidranges are separated by a space character.
|
||||
*
|
||||
* \retval number of characters written
|
||||
*/
|
||||
int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist)
|
||||
{
|
||||
int i = 0;
|
||||
struct nidrange *nr;
|
||||
|
||||
if (count <= 0)
|
||||
return 0;
|
||||
|
||||
list_for_each_entry(nr, nidlist, nr_link) {
|
||||
if (i != 0)
|
||||
i += scnprintf(buffer + i, count - i, " ");
|
||||
|
||||
if (nr->nr_all != 0) {
|
||||
LASSERT(list_empty(&nr->nr_addrranges));
|
||||
i += scnprintf(buffer + i, count - i, "*");
|
||||
i += cfs_print_network(buffer + i, count - i, nr);
|
||||
} else {
|
||||
i += cfs_print_addrranges(buffer + i, count - i,
|
||||
&nr->nr_addrranges, nr);
|
||||
}
|
||||
}
|
||||
return i;
|
||||
}
|
||||
EXPORT_SYMBOL(cfs_print_nidlist);
|
||||
|
|
|
|||
Loading…
Reference in New Issue