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authorJesper Dangaard Brouer <brouer@redhat.com>2018-01-03 11:25:34 +0100
committerAlexei Starovoitov <ast@kernel.org>2018-01-05 15:21:21 -0800
commitc0124f327e5cabd844a10d7e1fc5aa2a81e796a9 (patch)
tree1e030875ade5618ad69149020f0bc427a7bc0f5f /include/net
parent99ffc5ade4e8703c3bc56fa6bb8e25437da09ee9 (diff)
downloadlinux-c0124f327e5cabd844a10d7e1fc5aa2a81e796a9.tar.bz2
xdp/qede: setup xdp_rxq_info and intro xdp_rxq_info_is_reg
The driver code qede_free_fp_array() depend on kfree() can be called with a NULL pointer. This stems from the qede_alloc_fp_array() function which either (kz)alloc memory for fp->txq or fp->rxq. This also simplifies error handling code in case of memory allocation failures, but xdp_rxq_info_unreg need to know the difference. Introduce xdp_rxq_info_is_reg() to handle if a memory allocation fails and detect this is the failure path by seeing that xdp_rxq_info was not registred yet, which first happens after successful alloaction in qede_init_fp(). Driver hook points for xdp_rxq_info: * reg : qede_init_fp * unreg: qede_free_fp_array Tested on actual hardware with samples/bpf program. V2: Driver have no proper error path for failed XDP RX-queue info reg, as qede_init_fp() is a void function. Cc: everest-linux-l2@cavium.com Cc: Ariel Elior <Ariel.Elior@cavium.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/xdp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h
index 86c41631a908..b2362ddfa694 100644
--- a/include/net/xdp.h
+++ b/include/net/xdp.h
@@ -43,5 +43,6 @@ int xdp_rxq_info_reg(struct xdp_rxq_info *xdp_rxq,
struct net_device *dev, u32 queue_index);
void xdp_rxq_info_unreg(struct xdp_rxq_info *xdp_rxq);
void xdp_rxq_info_unused(struct xdp_rxq_info *xdp_rxq);
+bool xdp_rxq_info_is_reg(struct xdp_rxq_info *xdp_rxq);
#endif /* __LINUX_NET_XDP_H__ */