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net/smc: remove unused fields from smc structures 

The daddr field holds the destination IPv4 address. The field was set but
never used and can be removed. The addr field was a left-over from an
earlier version of non-blocking connects and can be removed.
The result of the call to kernel_getpeername is not used, the call can be
removed. Non-blocking connects are working, so remove restriction comment.

Signed-off-by: Karsten Graul <kgraul@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Graul 2018-03-01 13:51:28 +01:00 committed by David S. Miller
parent 696cd30169
commit be6d467b99
4 changed files with 8 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
net/smc/af_smc.c
View File

@ -7,7 +7,6 @@
* applicable with RoCE-cards only
*
* Initial restrictions:
* - non-blocking connect postponed
* - IPv6 support postponed
* - support for alternate links postponed
* - partial support for non-blocking sockets only
@ -345,7 +344,6 @@ static void smc_lgr_forget(struct smc_link_group *lgr)
/* setup for RDMA connection of client */
static int smc_connect_rdma(struct smc_sock *smc)
{
struct sockaddr_in *inaddr = (struct sockaddr_in *)smc->addr;
struct smc_clc_msg_accept_confirm aclc;
int local_contact = SMC_FIRST_CONTACT;
struct smc_ib_device *smcibdev;
@ -399,8 +397,8 @@ static int smc_connect_rdma(struct smc_sock *smc)
srv_first_contact = aclc.hdr.flag;
mutex_lock(&smc_create_lgr_pending);
local_contact = smc_conn_create(smc, inaddr->sin_addr.s_addr, smcibdev,
ibport, &aclc.lcl, srv_first_contact);
local_contact = smc_conn_create(smc, smcibdev, ibport, &aclc.lcl,
srv_first_contact);
if (local_contact < 0) {
rc = local_contact;
if (rc == -ENOMEM)
@ -518,7 +516,6 @@ static int smc_connect(struct socket *sock, struct sockaddr *addr,
goto out_err;
if (addr->sa_family != AF_INET)
goto out_err;
smc->addr = addr; /* needed for nonblocking connect */
lock_sock(sk);
switch (sk->sk_state) {
@ -726,7 +723,6 @@ static void smc_listen_work(struct work_struct *work)
struct sock *newsmcsk = &new_smc->sk;
struct smc_clc_msg_proposal *pclc;
struct smc_ib_device *smcibdev;
struct sockaddr_in peeraddr;
u8 buf[SMC_CLC_MAX_LEN];
struct smc_link *link;
int reason_code = 0;
@ -782,13 +778,10 @@ static void smc_listen_work(struct work_struct *work)
goto decline_rdma;
}
/* get address of the peer connected to the internal TCP socket */
kernel_getpeername(newclcsock, (struct sockaddr *)&peeraddr);
/* allocate connection / link group */
mutex_lock(&smc_create_lgr_pending);
local_contact = smc_conn_create(new_smc, peeraddr.sin_addr.s_addr,
smcibdev, ibport, &pclc->lcl, 0);
local_contact = smc_conn_create(new_smc, smcibdev, ibport, &pclc->lcl,
0);
if (local_contact < 0) {
rc = local_contact;
if (rc == -ENOMEM)

3
net/smc/smc.h
View File

@ -172,7 +172,6 @@ struct smc_sock { /* smc sock container */
struct sock sk;
struct socket *clcsock; /* internal tcp socket */
struct smc_connection conn; /* smc connection */
struct sockaddr *addr; /* inet connect address */
struct smc_sock *listen_smc; /* listen parent */
struct work_struct tcp_listen_work;/* handle tcp socket accepts */
struct work_struct smc_listen_work;/* prepare new accept socket */
@ -264,7 +263,7 @@ static inline bool using_ipsec(struct smc_sock *smc)
struct smc_clc_msg_local;
void smc_conn_free(struct smc_connection *conn);
int smc_conn_create(struct smc_sock *smc, __be32 peer_in_addr,
int smc_conn_create(struct smc_sock *smc,
struct smc_ib_device *smcibdev, u8 ibport,
struct smc_clc_msg_local *lcl, int srv_first_contact);
struct sock *smc_accept_dequeue(struct sock *parent, struct socket *new_sock);

7
net/smc/smc_core.c
View File

@ -144,7 +144,7 @@ free:
}
/* create a new SMC link group */
static int smc_lgr_create(struct smc_sock *smc, __be32 peer_in_addr,
static int smc_lgr_create(struct smc_sock *smc,
struct smc_ib_device *smcibdev, u8 ibport,
char *peer_systemid, unsigned short vlan_id)
{
@ -161,7 +161,6 @@ static int smc_lgr_create(struct smc_sock *smc, __be32 peer_in_addr,
}
lgr->role = smc->listen_smc ? SMC_SERV : SMC_CLNT;
lgr->sync_err = false;
lgr->daddr = peer_in_addr;
memcpy(lgr->peer_systemid, peer_systemid, SMC_SYSTEMID_LEN);
lgr->vlan_id = vlan_id;
rwlock_init(&lgr->sndbufs_lock);
@ -400,7 +399,7 @@ static int smc_link_determine_gid(struct smc_link_group *lgr)
}
/* create a new SMC connection (and a new link group if necessary) */
int smc_conn_create(struct smc_sock *smc, __be32 peer_in_addr,
int smc_conn_create(struct smc_sock *smc,
struct smc_ib_device *smcibdev, u8 ibport,
struct smc_clc_msg_local *lcl, int srv_first_contact)
{
@ -457,7 +456,7 @@ int smc_conn_create(struct smc_sock *smc, __be32 peer_in_addr,
create:
if (local_contact == SMC_FIRST_CONTACT) {
rc = smc_lgr_create(smc, peer_in_addr, smcibdev, ibport,
rc = smc_lgr_create(smc, smcibdev, ibport,
lcl->id_for_peer, vlan_id);
if (rc)
goto out;

1
net/smc/smc_core.h
View File

@ -124,7 +124,6 @@ struct smc_rtoken { /* address/key of remote RMB */
struct smc_link_group {
struct list_head list;
enum smc_lgr_role role; /* client or server */
__be32 daddr; /* destination ip address */
struct smc_link lnk[SMC_LINKS_PER_LGR_MAX]; /* smc link */
char peer_systemid[SMC_SYSTEMID_LEN];
/* unique system_id of peer */