From: Jalal Mostafa <jalal.a.mostapha@gmail.com>
To: maciej.fijalkowski@intel.com, netdev@vger.kernel.org,
bpf@vger.kernel.org
Cc: bjorn@kernel.org, magnus.karlsson@intel.com,
jonathan.lemon@gmail.com, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
daniel@iogearbox.net, john.fastabend@gmail.com, hawk@kernel.org,
ast@kernel.org, linux-kernel@vger.kernel.org,
jalal.mostafa@kit.edu, jalal.a.mostapha@gmail.com
Subject: [PATCH bpf v3] xsk: inherit need_wakeup flag for shared sockets
Date: Wed, 21 Sep 2022 13:57:01 +0000 [thread overview]
Message-ID: <20220921135701.10199-1-jalal.a.mostapha@gmail.com> (raw)
In-Reply-To: <YysApyiP4S3xdT8H@boxer>
The flag for need_wakeup is not set for xsks with `XDP_SHARED_UMEM`
flag and of different queue ids and/or devices. They should inherit
the flag from the first socket buffer pool since no flags can be
specified once `XDP_SHARED_UMEM` is specified.
Fixes: b5aea28dca134 ("xsk: Add shared umem support between queue ids")
Signed-off-by: Jalal Mostafa <jalal.a.mostapha@gmail.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
---
include/net/xsk_buff_pool.h | 2 +-
net/xdp/xsk.c | 4 ++--
net/xdp/xsk_buff_pool.c | 5 +++--
3 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/include/net/xsk_buff_pool.h b/include/net/xsk_buff_pool.h
index 647722e847b4..f787c3f524b0 100644
--- a/include/net/xsk_buff_pool.h
+++ b/include/net/xsk_buff_pool.h
@@ -95,7 +95,7 @@ struct xsk_buff_pool *xp_create_and_assign_umem(struct xdp_sock *xs,
struct xdp_umem *umem);
int xp_assign_dev(struct xsk_buff_pool *pool, struct net_device *dev,
u16 queue_id, u16 flags);
-int xp_assign_dev_shared(struct xsk_buff_pool *pool, struct xdp_umem *umem,
+int xp_assign_dev_shared(struct xsk_buff_pool *pool, struct xdp_sock *umem_xs,
struct net_device *dev, u16 queue_id);
int xp_alloc_tx_descs(struct xsk_buff_pool *pool, struct xdp_sock *xs);
void xp_destroy(struct xsk_buff_pool *pool);
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 5b4ce6ba1bc7..7bada4e8460b 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -954,8 +954,8 @@ static int xsk_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
goto out_unlock;
}
- err = xp_assign_dev_shared(xs->pool, umem_xs->umem,
- dev, qid);
+ err = xp_assign_dev_shared(xs->pool, umem_xs, dev,
+ qid);
if (err) {
xp_destroy(xs->pool);
xs->pool = NULL;
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index a71a8c6edf55..ed6c71826d31 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -212,17 +212,18 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
return err;
}
-int xp_assign_dev_shared(struct xsk_buff_pool *pool, struct xdp_umem *umem,
+int xp_assign_dev_shared(struct xsk_buff_pool *pool, struct xdp_sock *umem_xs,
struct net_device *dev, u16 queue_id)
{
u16 flags;
+ struct xdp_umem *umem = umem_xs->umem;
/* One fill and completion ring required for each queue id. */
if (!pool->fq || !pool->cq)
return -EINVAL;
flags = umem->zc ? XDP_ZEROCOPY : XDP_COPY;
- if (pool->uses_need_wakeup)
+ if (umem_xs->pool->uses_need_wakeup)
flags |= XDP_USE_NEED_WAKEUP;
return xp_assign_dev(pool, dev, queue_id, flags);
--
2.34.1
next prev parent reply other threads:[~2022-09-21 13:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-20 11:58 [PATCH bpf v2] xsk: inherit need_wakeup flag for shared sockets Jalal Mostafa
2022-09-20 13:34 ` Magnus Karlsson
2022-09-21 12:16 ` Maciej Fijalkowski
2022-09-21 13:57 ` Jalal Mostafa [this message]
2022-09-22 15:20 ` [PATCH bpf v3] " patchwork-bot+netdevbpf
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