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a)netdev_alloc_skb函数内部主要通过调用netdev_alloc_skb_ip_align函数来实现,该函数用于分配对齐的skb缓冲区。 b)netdev_alloc_skb_ip_align函数内部通过调用__netdev_alloc_skb函数来实现实际的内存分配。 3.2内存分配的实现方式 a)linux内核中的内存分配是通过slab分配器进行的。skb缓冲区通过kmem_cache_alloc...
netdev_alloc_skb用法 The `netdev_alloc_skb` function is a utility function used in the Linux kernel for allocating a network device buffer. It is commonly used by network device drivers to allocate a new buffer, also known as a socket buffer or `sk_buff`, to store incoming or outgoing...
(priv->synopsys_id >= DWMAC_CORE_4_00)) 4567 ndev->max_mtu = JUMBO_LEN; 4568 else 4569 ndev->max_mtu = SKB_MAX_HEAD(NET_SKB_PAD + NET_IP_ALIGN); 4570 /* Will not overwrite ndev->max_mtu if plat->maxmtu > ndev->max_mtu 4571 * as well as plat->maxmtu < ndev->...
if (sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; if (!capable(CAP_NET_RAW)) return -EPERM; sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); if (!sk)2 changes: 1 addition & 1 deletion 2 drivers/net/Kconfig Original file line numberDiff line numberDiff line...
14) Fix OOPS in __ipv6_ifa_notify(), from David Ahern. 15) Memory leak in NFC's llcp_sock_bind, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits) selftests/net: add nettest to .gitignore net: qlogic: Fix memory leak in ql_alloc_...
if (!skb) { first_frag = true; hr = max(NET_SKB_PAD, L1_CACHE_ALIGN(dev->needed_headroom)); tr = dev->needed_tailroom; skb = sock_alloc_send_skb(&xs->sk, hr + len + tr, 1, &err); @@ -685,12 +687,8 @@ static struct sk_buff *xsk_build_skb(struct xdp_sock *xs,...
skb = build_frag_skb(priv, ch, buf_data); free_pages((unsigned long)vaddr, 0); @@ -974,7 +974,7 @@ static int add_bufs(struct dpaa2_eth_priv *priv, if (!page) goto err_alloc;addr = dma_map_page(dev, page, 0, DPAA2_ETH_RX_BUF_SIZE, ...
skb = alloc_skb(0, GFP_ATOMIC); } else { skb = skb_clone(orig_skb, GFP_ATOMIC); if (skb_orphan_frags_rx(skb, GFP_ATOMIC)) return; } if (!skb) return; Expand Down 16 changes: 13 additions & 3 deletions 16 net/ipv4/ip_output.c Show comments View file Edit file Delete fil...
@@ -21,6 +23,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_linear(struct mlx5e_rq *rq, static inline int mlx5e_xsk_page_alloc_pool(struct mlx5e_rq *rq, struct mlx5e_dma_info *dma_info) { retry: dma_info->xsk = xsk_buff_alloc(rq->xsk_pool); if (!dma_info->xsk) re...