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| author | Zhu Yanjun <yanjun.zhu@oracle.com> | 2018-04-10 00:47:15 -0400 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2018-04-19 13:58:16 -0400 |
| commit | 2e47350789ebbc002b06d4549f60b5f9cba326ea (patch) | |
| tree | 6e83bf6447e42eedf26a78ff10cb5d2ef05c6ee2 /drivers/infiniband/sw | |
| parent | 8f1a72c815cf121f8a842c60c837f0d7605cdad4 (diff) | |
| download | linux-2e47350789ebbc002b06d4549f60b5f9cba326ea.tar.gz linux-2e47350789ebbc002b06d4549f60b5f9cba326ea.tar.bz2 linux-2e47350789ebbc002b06d4549f60b5f9cba326ea.zip | |
IB/rxe: optimize the function duplicate_request
In the function duplicate_request, the reference of skb can be increased
to replace the function skb_clone.
This will make rxe performace better and save memory.
CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/sw')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_resp.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c index a65c9969f7fc..c4172edf1f07 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -1124,24 +1124,13 @@ static enum resp_states duplicate_request(struct rxe_qp *qp, /* Find the operation in our list of responder resources. */ res = find_resource(qp, pkt->psn); if (res) { - struct sk_buff *skb_copy; - - skb_copy = skb_clone(res->atomic.skb, GFP_ATOMIC); - if (skb_copy) { - rxe_add_ref(qp); /* for the new SKB */ - } else { - pr_warn("Couldn't clone atomic resp\n"); - rc = RESPST_CLEANUP; - goto out; - } - + skb_get(res->atomic.skb); /* Resend the result. */ rc = rxe_xmit_packet(to_rdev(qp->ibqp.device), qp, - pkt, skb_copy); + pkt, res->atomic.skb); if (rc) { pr_err("Failed resending result. This flow is not handled - skb ignored\n"); - rxe_drop_ref(qp); - kfree_skb(skb_copy); + kfree_skb(res->atomic.skb); rc = RESPST_CLEANUP; goto out; } |