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IB/rxe: don't clear the tx queue on every transfer 

Do not call sk_dst_set() on every packet transfer because
that calls sk_tx_queue_clear(), which clears the tx queue.
A QP must stay on the same tx queue to maintain packet order.

Signed-off-by: Vijay Immanuel <vijayi@attalasystems.com>
Acked-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Vijay Immanuel 2018-06-18 18:48:56 -07:00 committed by Jason Gunthorpe
parent 92ebb6a0a1
commit 24c937b39d
1 changed files with 7 additions and 10 deletions
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17
drivers/infiniband/sw/rxe/rxe_net.c
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@ -223,6 +223,11 @@ static struct dst_entry *rxe_find_route(struct rxe_dev *rxe,
rt6_get_cookie((struct rt6_info *)dst);
#endif
}
if (dst && (qp_type(qp) == IB_QPT_RC)) {
dst_hold(dst);
sk_dst_set(qp->sk->sk, dst);
}
}
rdma_put_gid_attr(attr);
return dst;
@ -397,11 +402,7 @@ static int prepare4(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
prepare_ipv4_hdr(dst, skb, saddr->s_addr, daddr->s_addr, IPPROTO_UDP,
av->grh.traffic_class, av->grh.hop_limit, df, xnet);
if (qp_type(qp) == IB_QPT_RC)
sk_dst_set(qp->sk->sk, dst);
else
dst_release(dst);
dst_release(dst);
return 0;
}
@ -429,11 +430,7 @@ static int prepare6(struct rxe_dev *rxe, struct rxe_pkt_info *pkt,
av->grh.traffic_class,
av->grh.hop_limit);
if (qp_type(qp) == IB_QPT_RC)
sk_dst_set(qp->sk->sk, dst);
else
dst_release(dst);
dst_release(dst);
return 0;
}