5.15-stable patches

added patches:
	xsk-inherit-need_wakeup-flag-for-shared-sockets.patch

diff --git a/queue-5.15/series b/queue-5.15/series
index 096c3c911976810b011ba118aa9fc2d9c189f97f..7e24ba78f7ac481fbc5345dabf2829e15a90bd46 100644 (file)
--- a/queue-5.15/series
+++ b/queue-5.15/series
@@ -1,5 +1,6 @@
 makefile.extrawarn-move-wcast-function-type-strict-to-w-1.patch
 docs-update-mediator-information-in-coc-docs.patch
+xsk-inherit-need_wakeup-flag-for-shared-sockets.patch
 mm-gup-fix-the-fast-gup-race-against-thp-collapse.patch
 powerpc-64s-radix-don-t-need-to-broadcast-ipi-for-radix-pmd-collapse-flush.patch
 wait_on_bit-add-an-acquire-memory-barrier.patch

diff --git a/queue-5.15/xsk-inherit-need_wakeup-flag-for-shared-sockets.patch b/queue-5.15/xsk-inherit-need_wakeup-flag-for-shared-sockets.patch
new file mode 100644 (file)
index 0000000..4b2573c
--- /dev/null
+++ b/queue-5.15/xsk-inherit-need_wakeup-flag-for-shared-sockets.patch
@@ -0,0 +1,73 @@
+From 60240bc26114543fcbfcd8a28466e67e77b20388 Mon Sep 17 00:00:00 2001
+From: Jalal Mostafa <jalal.a.mostapha@gmail.com>
+Date: Wed, 21 Sep 2022 13:57:01 +0000
+Subject: xsk: Inherit need_wakeup flag for shared sockets
+
+From: Jalal Mostafa <jalal.a.mostapha@gmail.com>
+
+commit 60240bc26114543fcbfcd8a28466e67e77b20388 upstream.
+
+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>
+Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
+Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
+Link: https://lore.kernel.org/bpf/20220921135701.10199-1-jalal.a.mostapha@gmail.com
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ 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(-)
+
+--- a/include/net/xsk_buff_pool.h
++++ b/include/net/xsk_buff_pool.h
+@@ -87,7 +87,7 @@ struct xsk_buff_pool *xp_create_and_assi
+                                               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);
+--- a/net/xdp/xsk.c
++++ b/net/xdp/xsk.c
+@@ -968,8 +968,8 @@ static int xsk_bind(struct socket *sock,
+                               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;
+--- a/net/xdp/xsk_buff_pool.c
++++ b/net/xdp/xsk_buff_pool.c
+@@ -206,17 +206,18 @@ err_unreg_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);