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| author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-01-09 16:55:19 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-01-09 16:07:39 -0500 |
| commit | f38ba179c6ca94ebeb0ac6a0956c4ea533151ad8 (patch) | |
| tree | a061b0fe37bfc4070e7b97aa3600c72fc8bccf2b /net/smc/smc_core.c | |
| parent | cd6851f30386e5e04b5c2253f8e1647ba0ebcd31 (diff) | |
| download | linux-f38ba179c6ca94ebeb0ac6a0956c4ea533151ad8.tar.gz | |
smc: work request (WR) base for use by LLC and CDC
The base containers for RDMA transport are work requests and completion queue entries processed through Infiniband verbs: * allocate and initialize these areas * map these areas to DMA * implement the basic communication consisting of work request posting and receival of completion queue events Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_core.c')
| -rw-r--r-- | net/smc/smc_core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index e1b95728ca81..0eed4c154081 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -20,6 +20,7 @@ #include "smc_clc.h" #include "smc_core.h" #include "smc_ib.h" +#include "smc_wr.h" #define SMC_LGR_FREE_DELAY (600 * HZ) @@ -161,12 +162,20 @@ static int smc_lgr_create(struct smc_sock *smc, __be32 peer_in_addr, lnk->path_mtu = smcibdev->pattr[ibport - 1].active_mtu; get_random_bytes(rndvec, sizeof(rndvec)); lnk->psn_initial = rndvec[0] + (rndvec[1] << 8) + (rndvec[2] << 16); + rc = smc_wr_alloc_link_mem(lnk); + if (rc) + goto free_lgr; + init_waitqueue_head(&lnk->wr_tx_wait); smc->conn.lgr = lgr; rwlock_init(&lgr->conns_lock); spin_lock_bh(&smc_lgr_list.lock); list_add(&lgr->list, &smc_lgr_list.list); spin_unlock_bh(&smc_lgr_list.lock); + return 0; + +free_lgr: + kfree(lgr); out: return rc; } @@ -202,6 +211,8 @@ void smc_conn_free(struct smc_connection *conn) static void smc_link_clear(struct smc_link *lnk) { lnk->peer_qpn = 0; + smc_wr_free_link(lnk); + smc_wr_free_link_mem(lnk); } static void smc_lgr_free_sndbufs(struct smc_link_group *lgr) |