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nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct 

the change is valid for both the forechannel and the backchannel (currently dummy)

Signed-off-by: Alexandros Batsakis <Alexandros.Batsakis@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Alexandros Batsakis 2009-06-16 04:19:13 +03:00 committed by J. Bruce Fields
parent b9081d90f5
commit 6c18ba9f5e
4 changed files with 29 additions and 30 deletions
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28
fs/nfsd/nfs4state.c
View File

@ -444,8 +444,8 @@ static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
* fchan holds the client values on input, and the server values on output
*/
static int init_forechannel_attrs(struct svc_rqst *rqstp,
struct nfsd4_session *session,
struct nfsd4_channel_attrs *fchan)
struct nfsd4_channel_attrs *session_fchan,
struct nfsd4_channel_attrs *fchan)
{
int status = 0;
__u32 maxcount = svc_max_payload(rqstp);
@ -455,21 +455,21 @@ static int init_forechannel_attrs(struct svc_rqst *rqstp,
/* Use the client's max request and max response size if possible */
if (fchan->maxreq_sz > maxcount)
fchan->maxreq_sz = maxcount;
session->se_fmaxreq_sz = fchan->maxreq_sz;
session_fchan->maxreq_sz = fchan->maxreq_sz;
if (fchan->maxresp_sz > maxcount)
fchan->maxresp_sz = maxcount;
session->se_fmaxresp_sz = fchan->maxresp_sz;
session_fchan->maxresp_sz = fchan->maxresp_sz;
/* Set the max response cached size our default which is
* a multiple of PAGE_SIZE and small */
session->se_fmaxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE;
fchan->maxresp_cached = session->se_fmaxresp_cached;
session_fchan->maxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE;
fchan->maxresp_cached = session_fchan->maxresp_cached;
/* Use the client's maxops if possible */
if (fchan->maxops > NFSD_MAX_OPS_PER_COMPOUND)
fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND;
session->se_fmaxops = fchan->maxops;
session_fchan->maxops = fchan->maxops;
/* try to use the client requested number of slots */
if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
@ -481,7 +481,7 @@ static int init_forechannel_attrs(struct svc_rqst *rqstp,
*/
status = set_forechannel_maxreqs(fchan);
session->se_fnumslots = fchan->maxreqs;
session_fchan->maxreqs = fchan->maxreqs;
return status;
}
@ -495,12 +495,14 @@ alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
memset(&tmp, 0, sizeof(tmp));
/* FIXME: For now, we just accept the client back channel attributes. */
status = init_forechannel_attrs(rqstp, &tmp, &cses->fore_channel);
tmp.se_bchannel = cses->back_channel;
status = init_forechannel_attrs(rqstp, &tmp.se_fchannel,
&cses->fore_channel);
if (status)
goto out;
/* allocate struct nfsd4_session and slot table in one piece */
slotsize = tmp.se_fnumslots * sizeof(struct nfsd4_slot);
slotsize = tmp.se_fchannel.maxreqs * sizeof(struct nfsd4_slot);
new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL);
if (!new)
goto out;
@ -574,7 +576,7 @@ free_session(struct kref *kref)
int i;
ses = container_of(kref, struct nfsd4_session, se_ref);
for (i = 0; i < ses->se_fnumslots; i++) {
for (i = 0; i < ses->se_fchannel.maxreqs; i++) {
struct nfsd4_cache_entry *e = &ses->se_slots[i].sl_cache_entry;
nfsd4_release_respages(e->ce_respages, e->ce_resused);
}
@ -1130,7 +1132,7 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
* is sent (lease renewal).
*/
if (seq && nfsd4_not_cached(resp)) {
seq->maxslots = resp->cstate.session->se_fnumslots;
seq->maxslots = resp->cstate.session->se_fchannel.maxreqs;
return nfs_ok;
}
@ -1473,7 +1475,7 @@ nfsd4_sequence(struct svc_rqst *rqstp,
goto out;
status = nfserr_badslot;
if (seq->slotid >= session->se_fnumslots)
if (seq->slotid >= session->se_fchannel.maxreqs)
goto out;
slot = &session->se_slots[seq->slotid];

2
fs/nfsd/nfs4xdr.c
View File

@ -3183,7 +3183,7 @@ static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
length, xb->page_len, tlen, pad);
if (length <= session->se_fmaxresp_cached)
if (length <= session->se_fchannel.maxresp_cached)
return status;
else
return nfserr_rep_too_big_to_cache;

18
include/linux/nfsd/state.h
View File

@ -115,6 +115,17 @@ struct nfsd4_slot {
struct nfsd4_cache_entry sl_cache_entry;
};
struct nfsd4_channel_attrs {
u32 headerpadsz;
u32 maxreq_sz;
u32 maxresp_sz;
u32 maxresp_cached;
u32 maxops;
u32 maxreqs;
u32 nr_rdma_attrs;
u32 rdma_attrs;
};
struct nfsd4_session {
struct kref se_ref;
struct list_head se_hash; /* hash by sessionid */
@ -122,11 +133,8 @@ struct nfsd4_session {
u32 se_flags;
struct nfs4_client *se_client; /* for expire_client */
struct nfs4_sessionid se_sessionid;
u32 se_fmaxreq_sz;
u32 se_fmaxresp_sz;
u32 se_fmaxresp_cached;
u32 se_fmaxops;
u32 se_fnumslots;
struct nfsd4_channel_attrs se_fchannel;
struct nfsd4_channel_attrs se_bchannel;
struct nfsd4_slot se_slots[]; /* forward channel slots */
};

11
include/linux/nfsd/xdr4.h
View File

@ -366,17 +366,6 @@ struct nfsd4_exchange_id {
int spa_how;
};
struct nfsd4_channel_attrs {
u32 headerpadsz;
u32 maxreq_sz;
u32 maxresp_sz;
u32 maxresp_cached;
u32 maxops;
u32 maxreqs;
u32 nr_rdma_attrs;
u32 rdma_attrs;
};
struct nfsd4_create_session {
clientid_t clientid;
struct nfs4_sessionid sessionid;