On Thu, Oct 15, 2020 at 03:17:51PM -0500, Bob Pearson wrote:
> Update enum rdma_network_type copy to match kernel version.
> Without this change provider/rxe will send incorrect
> network types to the kernel in send WQEs.
>
> This fix keeps rxe functional but should be replaced by a better
> implementation.
>
> Signed-off-by: Bob Pearson <rpearson@xxxxxxx>
> ---
> providers/rxe/rxe.h | 1 +
> 1 file changed, 1 insertion(+)
Well, we can't just break user space so the kernel has to change in
some way to accommodate this.
Obviously rxe should not have uAPI stuff that is not in
include/uapi/rdma, so lets just fix that directly.
Please confirm I did this right. The PR for this merge window must be
sent Friday.
>From 8b20e1ceea413c98cb98930cb549be390226320f Mon Sep 17 00:00:00 2001
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Thu, 15 Oct 2020 20:42:18 -0300
Subject: [PATCH] RDMA/rxe: Move the definitions for rxe_av.network_type to
uAPI
RXE was wrongly using an internal kernel enum as part of its uAPI, split
this out into a dedicated uAPI enum just for RXE. It only uses the IPv4
and IPv6 values.
This was exposed by changing the internal kernel enum definition which
broke RXE.
Fixes: 1c15b4f2a42f ("RDMA/core: Modify enum ib_gid_type and enum rdma_network_type")
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
---
drivers/infiniband/sw/rxe/rxe_net.c | 8 ++++----
include/uapi/rdma/rdma_user_rxe.h | 6 ++++++
2 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index 31b93e7e1e2f41..575e1a4ec82121 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -133,14 +133,14 @@ static struct dst_entry *rxe_find_route(struct net_device *ndev,
if (dst)
dst_release(dst);
- if (av->network_type == RDMA_NETWORK_IPV4) {
+ if (av->network_type == RXE_NETWORK_TYPE_IPV4) {
struct in_addr *saddr;
struct in_addr *daddr;
saddr = &av->sgid_addr._sockaddr_in.sin_addr;
daddr = &av->dgid_addr._sockaddr_in.sin_addr;
dst = rxe_find_route4(ndev, saddr, daddr);
- } else if (av->network_type == RDMA_NETWORK_IPV6) {
+ } else if (av->network_type == RXE_NETWORK_TYPE_IPV6) {
struct in6_addr *saddr6;
struct in6_addr *daddr6;
@@ -442,7 +442,7 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
if (IS_ERR(attr))
return NULL;
- if (av->network_type == RDMA_NETWORK_IPV4)
+ if (av->network_type == RXE_NETWORK_TYPE_IPV6)
hdr_len = ETH_HLEN + sizeof(struct udphdr) +
sizeof(struct iphdr);
else
@@ -469,7 +469,7 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
skb->dev = ndev;
rcu_read_unlock();
- if (av->network_type == RDMA_NETWORK_IPV4)
+ if (av->network_type == RXE_NETWORK_TYPE_IPV4)
skb->protocol = htons(ETH_P_IP);
else
skb->protocol = htons(ETH_P_IPV6);
diff --git a/include/uapi/rdma/rdma_user_rxe.h b/include/uapi/rdma/rdma_user_rxe.h
index d8f2e0e46daba7..e591d8c1f3cf10 100644
--- a/include/uapi/rdma/rdma_user_rxe.h
+++ b/include/uapi/rdma/rdma_user_rxe.h
@@ -39,6 +39,11 @@
#include <linux/in.h>
#include <linux/in6.h>
+enum {
+ RXE_NETWORK_TYPE_IPV4 = 1,
+ RXE_NETWORK_TYPE_IPV6 = 2,
+};
+
union rxe_gid {
__u8 raw[16];
struct {
@@ -57,6 +62,7 @@ struct rxe_global_route {
struct rxe_av {
__u8 port_num;
+ /* From RXE_NETWORK_TYPE_* */
__u8 network_type;
__u8 dmac[6];
struct rxe_global_route grh;
--
2.28.0
