diff options
| author | Vijay Immanuel <vijayi@attalasystems.com> | 2018-07-05 18:43:47 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2018-08-30 16:31:50 -0400 |
| commit | d3c04a3a6870a4b96ee213d99b4f4ca723e64025 (patch) | |
| tree | 39ae0cd303cf2792ba98138cdf96c388ce428f5d /drivers/infiniband/sw/rxe/rxe_qp.c | |
| parent | 5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff) | |
| download | linux-stable-d3c04a3a6870a4b96ee213d99b4f4ca723e64025.tar.gz linux-stable-d3c04a3a6870a4b96ee213d99b4f4ca723e64025.tar.bz2 linux-stable-d3c04a3a6870a4b96ee213d99b4f4ca723e64025.zip | |
IB/rxe: vary the source udp port for receive scaling
Select the source udp port number for a QP based on the
source QPN. This provides a better spread of traffic
across NIC RX queues for RC/UC QPs.
Signed-off-by: Vijay Immanuel <vijayi@attalasystems.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_qp.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_qp.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_qp.c b/drivers/infiniband/sw/rxe/rxe_qp.c index c58452daffc7..6ff88c8250f6 100644 --- a/drivers/infiniband/sw/rxe/rxe_qp.c +++ b/drivers/infiniband/sw/rxe/rxe_qp.c @@ -227,6 +227,16 @@ static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp, return err; qp->sk->sk->sk_user_data = qp; + /* pick a source UDP port number for this QP based on + * the source QPN. this spreads traffic for different QPs + * across different NIC RX queues (while using a single + * flow for a given QP to maintain packet order). + * the port number must be in the Dynamic Ports range + * (0xc000 - 0xffff). + */ + qp->src_port = RXE_ROCE_V2_SPORT + + (hash_32_generic(qp_num(qp), 14) & 0x3fff); + qp->sq.max_wr = init->cap.max_send_wr; qp->sq.max_sge = init->cap.max_send_sge; qp->sq.max_inline = init->cap.max_inline_data; |