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Do not add RoCEv2 default GID in ibcore when IPv6 is disabled to honor the

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networking stack's IPv6 disabled setting. Else the offload HCA can start using
IPv6 packets for QPs.

MFC after:	1 week
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2018-03-05 11:52:39 +00:00
parent 09938b2185
commit be5c019762
1 changed files with 11 additions and 0 deletions
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11
sys/ofed/drivers/infiniband/core/ib_cache.c
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@ -42,6 +42,7 @@
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/netdevice.h>
#include <linux/in6.h>
#include <rdma/ib_cache.h>
@ -703,6 +704,16 @@ void ib_cache_gid_set_default_gid(struct ib_device *ib_dev, u8 port,
memset(&gid_attr, 0, sizeof(gid_attr));
gid_attr.ndev = ndev;
/* Default GID is created using unique GUID and local subnet prefix,
* as described in section 4.1.1 and 3.5.10 in IB spec 1.3.
* Therefore don't create RoCEv2 default GID based on it that
* resembles as IPv6 GID based on link local address when IPv6 is
* disabled in kernel.
*/
#ifndef INET6
gid_type_mask &= ~BIT(IB_GID_TYPE_ROCE_UDP_ENCAP);
#endif
for (gid_type = 0; gid_type < IB_GID_TYPE_SIZE; ++gid_type) {
int ix;
union ib_gid current_gid;