Skbuff_fclone_cache

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August undefined, 2024

Webb24 maj 2024 · Security Gateway configured in Monitor Mode (per sk101670) with enabled SecureXL might freeze intermittently (no access to console, only cold reboot helps). SmartView Monitor and output of " cat /proc/meminfo " command show that memory consumption increases over time. Output of " cat /proc/slabinfo " command shows huge … Webb* [PATCH 1/2] net: add and use skb_gso_transport_seglen() 2014-01-25 22:48 [PATCH 0/2] Fix handling of GRO skbs in forwarding path Florian Westphal @ 2014-01-25 22:48 ` Florian Westphal 2014-01-26 1:28 ` Eric Dumazet 2014-01-25 22:48 ` [PATCH 2/2] net: ip, ipv6: handle gso skbs in forwarding path Florian Westphal 1 sibling, 1 reply; 7+ messages ...

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Webbskbuff.c - net/core/skbuff.c - Linux source code (v6.2.7) - Bootlin. Elixir Cross Referencer - Explore source code in your browser - Particularly useful for the Linux kernel and other … WebbWhen I've used slub_debug kernel option (e.g. "slub_debug=,skbuff_fclone_cache" or similar) on a debug session I've Hmmm.. That looks like its due to some slabs not having names during early boot. kmem_cache_flags is called with NULL as a parameter. Older kernels didn't show this problem. I think the sequence of those Post by Christoph Lameter fairchildes high school

Linux网络之密：skbuff - 知乎 - 知乎专栏

Webb1 sep. 2011 · skbuff_fclone_cache 126 126 512 7 1 : tunables 54 27 8 : slabdata 18 18 54 skbuff_head_cache 2255 2715 256 15 1 : tunables 120 60 8 : slabdata 181 181 120 file_lock_cache 60 60 192 20 1 : tunables 120 60 8 : slabdata 3 3 0 shmem_inode_cache 663 696 608 6 1 : tunables 54 27 8 : slabdata 116 116 0 Webb10 jan. 2016 · I debugged a little bit, found that skbuff_head_cache allocating all system memory and causing this problem. (Any idea?) I have checked mesh_stats in debugfs … Webbsk_buffのfcloneにはClone状態が保持される。オリジナルのsk_buffにはSKB_FCLONE_ORIGがセットされ、Clone用のsk_buffにはSKB_FCLONE_UNAVAILABLEがセットされる。図4.2 alloc_skb_fclone ()で確保したsk_buff alloc_skb_fclone ()で確保したsk_buffをskb_clone ()で複製すると図4.3のようになる。 Clone用のsk_buffがオリジナ … dog sitters in felixstowe

skbuff.h - include/linux/skbuff.h - Linux source code (v5.9.9) - Bootlin

如何任意扩展sk_buff而不重新编译内核-阿里云开发者社区

Webbdiff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 94958c1..97bf12c 100644--- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h ... dog sitters in bishops stortfordcase SKB_FCLONE_UNAVAILABLE: kmem_cache_free(skbuff_cache, skb); return; case SKB_FCLONE_ORIG: fclones = container_of(skb, struct sk_buff_fclones, skb1); /* We usually free the clone (TX completion) before original skb * This test would have no chance to be true for the clone, * while here, branch prediction will be good. */ fairchildes primary school new addington

"Webb4 nov. 2024 · cache = (flags & SKB_ALLOC_FCLONE) ? skbuff_fclone_cache : skbuff_head_cache; if (sk_memalloc_socks() && (flags & SKB_ALLOC_RX)) gfp_mask = __GFP_MEMALLOC; /* Get the HEAD */ /* 分配skb */ skb = kmem_cache_alloc_node(cache, gfp_mask & ~__GFP_DMA, node); if (!skb) goto out; prefetchw(skb); " - Skbuff_fclone_cache

Skbuff_fclone_cache

Webb3 mars 2011 · 1、skb_clone () Skb_clone ()函数只是复制sk_buff结构，并不复制skb的数据缓冲区。. Clone后的sk_buff结构与原始的sk_buff指向同一数据缓冲区。. 原始的和clone后的skb描述符的cloned值都会被置1，clone的skb描述符的users值置1，同时数据缓冲区的引用计数dataref增加1。. /**. * skb ... Webb28 aug. 2015 · by sven — on network , linux 28 Aug 2015. ###1. struct sk_buff. sk_buff是Linux网络代码中最重要的结构体之一。它是Linux在其协议栈里传送的结构体，也就是所谓的“包”，在其中包含了各层协议的头部的指针，比如ethernet, ip ,tcp ,udp等等，linux中还定义了一堆sk_buff的相关操作 ...

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Webb4.1 Socket Buffers. Next page. The network implementation of Linux is designed to be independent of a specific protocol. This applies both to the network and transport layer protocols (TCIP/IP, IPX/SPX, etc.) and to network adapter protocols (Ethernet, token ring, etc.). Other protocols can be added to any network layer without a need for major ... Webbstruct sk_buff * alloc_skb_fclone (unsigned int size, gfp_t priority) ¶ allocate a network buffer from fclone cache. Parameters. unsigned int size. size to allocate. gfp_t priority. allocation mask. Description. This function is a convenient wrapper around __alloc_skb(). int skb_pad (struct sk_buff * skb, int pad) ¶ zero pad the tail of an ...

WebbLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [RFC][PATCH 0/7] Sanitization of slabs based on grsecurity/PaX @ 2015-12-22 3:40 Laura Abbott 2015-12-22 3:40 ` [RFC][PATCH 1/7] mm/slab_common.c: Add common support for slab saniziation Laura Abbott ` (7 more replies) 0 siblings, 8 replies; 45+ messages in thread From: Laura … WebbNetdev Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 0/2] Fix handling of GRO skbs in forwarding path @ 2014-01-25 22:48 Florian Westphal 2014-01-25 22:48 ` [PATCH 1/2] net: add and use skb_gso_transport_seglen() Florian Westphal 2014-01-25 22:48 ` [PATCH 2/2] net: ip, ipv6: handle gso skbs in forwarding path Florian …

Webb3 feb. 2024 · skbuff_fclone_cache 83 0 skbuff_head_cache 138 141 file_lock_cache 24 0 net_namespace 1 5 shmem_inode_cache 14 56 task_delay_info 23 165 taskstats 24 0 proc_dir_entry 24 0 pde_opener 16 24 proc_inode_cache 24 1103 bdev_cache 4 … Webb* [PATCH 5.10 000/167] 5.10.54-rc1 review @ 2024-07-26 15:37 Greg Kroah-Hartman 2024-07-26 15:37 ` [PATCH 5.10 001/167] igc: Fix use-after-free error during reset ...

Webbskbuff_fclone_cache. On a box with 16 threads, it will cache up about 5 GB of disk data, and still use about 6 GB of slab to put the information out there (without TSO on), but at …

Webb15 feb. 2024 · Hi, I am running openwrt on allwinner h3 boards with usb dongle. i found after some time, board is restarting. problem is out of memory because of … fairchildes primary school websiteWebbNetdev Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH net-next v3] MPLS: Add limited GSO support @ 2013-05-17 6:50 Simon Horman 2013-05-17 17:26 ` Eric Dumazet 2013-05-17 21:42 ` Jesse Gross 0 siblings, 2 replies; 5+ messages in thread From: Simon Horman @ 2013-05-17 6:50 UTC (permalink / raw) To: dev, netdev Cc: Jesse … dog sitters in county durhamWebbAll the data is held in associated buffers. *. * &sk_buff.head points to the main "head" buffer. The head buffer is divided. * into two parts: *. * - data buffer, containing headers … fairchildes primary school croydonWebbskb_clone () allows for fast duplication of skbs. None of the data buffers get copied, but caller gets a new metadata struct ( struct sk_buff ). &skb_shared_info.refcount indicates … dog sitters in high wycombeWebb“fclone”：是较新版kernel中添加的一个特性，以前版本的kernel中skb在分配的时候都是从后备高速缓存(lookaside cache)skbuff_head_cache 中获取sk_buff的结构；而现在可以 … dog sitters in castle rock coWebb13 feb. 2024 · + skb = kmem_cache_alloc_node(cache, gfp_mask & ~__GFP_DMA, node); + if (!skb) + goto out; + prefetchw(skb); + + /* We do our best to align skb_shared_info on a … dog sitters in anchorage alaskaWebb12 nov. 2024 · 玩Linux网络的同好一定希望可以任意定义网络处理逻辑的行为，可谓协议处理的高端定制，最显而易见的办法就是在结构体里面加一个字段，事实上Linux的一个入口流控补丁IMQ就是这么做的，它简单的修改了Linux内核的sk_buff结构体的定义，增加了一个字段，增加了 ... dog sitters fort worth tx