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| author | Weihang Li <liweihang@huawei.com> | 2020-08-21 17:31:29 +0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-08-31 12:03:17 -0300 |
| commit | 074bf2c2c7a1f5722eabccee7d919fe20ada0cda (patch) | |
| tree | 5c29bb35884612ffa784b40d4f97ce409739ef9e /include/rdma | |
| parent | 5f9e2822d12fe5050da5db0e65924d5ddc86bf29 (diff) | |
| download | linux-074bf2c2c7a1f5722eabccee7d919fe20ada0cda.tar.bz2 | |
RDMA/hns: Get udp sport num dynamically instead of using a fixed value
The UDP source port number in RoCE v2 is used to create entropy for
network routers (ECMP), load balancers and 802.3ad link aggregation
switching that are not aware of RoCE IB headers. Considering that the IB
core has achieved a new interface to get a hashed value of it, the fixed
value of it in QPC and UD WQE in hns driver could be fixed and the port
number is to be set dynamically now.
For QPC of RC, the value could be hashed from flow_lable if the user pass
it in or from remote qpn and local qpn. For WQE of UD, it is set according
to fl or as a random value.
Link: https://lore.kernel.org/r/1598002289-8611-1-git-send-email-liweihang@huawei.com
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 55dfe0e9d1d6..c868609a4ffa 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -4706,6 +4706,7 @@ bool rdma_dev_access_netns(const struct ib_device *device, const struct net *net); #define IB_ROCE_UDP_ENCAP_VALID_PORT_MIN (0xC000) +#define IB_ROCE_UDP_ENCAP_VALID_PORT_MAX (0xFFFF) #define IB_GRH_FLOWLABEL_MASK (0x000FFFFF) /** |