2024 Skbuff_fclone

Skbuff_fclone_cache

Author: olpo

August undefined, 2024

Webb18 feb. 2024 · skbuff_fclone_cache ：创建每次以两倍SKB描述符长度分配空间的skbuff_fclone_cache高速缓存，如果在分配SKB时就知道可能被克隆，那么应该从这个 … Webb*PATCH net-next 3/3] bnxt: hook NAPIs to page pools 2024-04-11 20:17 [PATCH net-next 0/3] page_pool: allow caching from safely localized NAPI Jakub Kicinski 2024-04-11 20:17 ` [PATCH net-next 1/3] net: skb: plumb napi state thru skb freeing paths Jakub Kicinski 2024-04-11 20:17 ` [PATCH net-next 2/3] page_pool: allow caching from safely localized ...

RE: CONFIG_DEBUG_SLAB_LEAK omits size-4096 and larger?

WebbMessage ID: [email protected] (mailing list archive)State: New, archived: Headers: show WebbNetdev 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 … twin bed frames cheap

Re: [PATCH net-next v6 04/18] mm: Make the page_frag_cache …

Webb• Caching. • All other subsystems need the services of the slab allocators. • Terminology: SLAB is one of the slab allocator. • A SLAB could be a page frame or a slab cache as a whole. ... t-0000512 - kmalloc-512 skbuff_fclone_cache sgpool-16 :t-0000640 - kioctx dio files_cache :t-0000832 - ecryptfs_auth_tok_list_item task_xstate : ... 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 WebbLinux debugging, tracing, profiling & perf. analysis. Check our new training course. with Creative Commons CC-BY-SA twin bed frames in stock near me

[RFC PATCH 3/3] net: use qmempool in-front of sk_buff …

Webb22 juli 2024 · The issue is napi_skb_cache_put is not fclone friendly and will put those skbuff in the skb cache to be reused later, although this cache only expects skbuff … Webb20 aug. 2014 · 如果是释放从skbuff_fclone_cache中分配的父SKB描述符，且克隆计数为1，则释放父SKB描述符。如果是释放从skbuff_fclone_cache中分配的子SKB描述符，设置父SKLB的fclone字段为SKB_FCLONE_UNAVAILABLE，在克隆计数为1的情况下，释放 … twin bed frames for sale clearanceWebb13 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 … twin bed frames for small rooms

"Webb套接口缓存 (socket buffer，简称skb)主要解决网络协议操作的。. 能够很方便地处理可变长缓存，因为接受和发送的数据包长度不固定。. 能够很容易的实现头尾添加和删除数据， … " - Skbuff_fclone_cache

Skbuff_fclone_cache

Linux Networking and Network Devices APIs — The Linux Kernel …

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 ... WebbSign in. gfiber / kernel / quantenna / master / . / include / linux / skbuff.h. blob: 2f4cbdb0dbde2f8c9e1a92bdcdfe807963e36785 /* * Definitions for the 'struct sk ...

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Webb*RFC net-next v2 0/3] page_pool: allow caching from safely localized NAPI @ 2024-04-05 23:20 Jakub Kicinski 2024-04-05 23:20 ` [RFC net-next v2 1/3] net: skb: plumb napi state thru skb freeing paths Jakub Kicinski ` (2 more replies) 0 siblings, 3 replies; 9+ messages in thread From: Jakub Kicinski @ 2024-04-05 23:20 UTC (permalink / raw ... WebbPut private vars here * @_skb_refdst: destination entry (with norefcount bit) * @sp: the security path, used for xfrm * @len: Length of actual data * @data_len: Data length * @mac_len: Length of link layer header * @hdr_len: writable header length of cloned skb * @csum: Checksum (must include start/offset pair) * @csum_start: Offset from skb …

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); Webbskbuff_fclone_cache - Slab-Info - BoxMatrix. skbuff_fclone_cache - TODO - BoxMatrix FRITZ!Box Research Wiki. If you like BoxMatrixthen please contribute Supportdata, …

WebbSomesocket buffers allocated inthe fclone cache (in__alloc_skb)can end-up inthe following path[1]: napi_skb_finish __kfree_skb_defer napi_skb_cache_put Theissue isnapi_skb_cache_put isnotfclone friendly andwill put those skbuff inthe skb cache to be reused later,although thiscache only expects skbuff allocated fromskbuff_head_cache. … Webb6 maj 2009 · There's a couple of reasons for doing this: - Make skb recycling available to all drivers, without needing driver modifications. - Allow recycling skbuffs in more cases, by having the recycle check in __kfree_skb () instead of in the ethernet driver transmit completion routine. This also allows for example recycling locally destined skbuffs ...

Webbmonitor - page cache - vmstat slab. GitHub Gist: instantly share code, notes, and snippets. Skip to content. All gists Back to GitHub Sign in Sign up Sign in Sign up {{ message }} ... skbuff_fclone_cache 24 24 512 8: skbuff_head_cache 1889 1952 256 …

Webb*syzbot] KASAN: use-after-free Read in tipc_recvmsg @ 2024-07-18 17:15 syzbot 2024-07-23 16:36 ` Pavel Skripkin 0 siblings, 1 reply; 7+ messages in thread From: syzbot @ 2024-07-18 17:15 UTC (permalink / raw) To: davem, devicetree, frowand.list, gregkh, jmaloy, kuba, linux-kernel, netdev, rafael, robh+dt, robh, syzkaller-bugs, tipc-discussion, ying ... tailor maid eagle river wiWebb如果skb是从skbuff_fclone_cache缓存池中申请的内存时，则要仔细销毁过程了，因为从这个缓存池中申请的内存，会返还2个skb结构体和一个引用计数器。所以销毁时不仅要考 … twin bed frames with deskWebb当定义了net_skbuff_data_uses_offset时，skb->end实际上为偏移值。而没有定义的时候，skb->end为指针。这里我有一个疑惑，为什么还要加上skb->data_len，这样的话，申请的内存比原有的skb的size要大了啊。 tailor maybe crossword clueWebb4.1 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 ... twin bed frame tallWebbslabtop is representing separate cache area used by kernel and it's allocated for frequently used kernel objects. Looking at your slabinfo output, there is about ~7GB of ext4 inode … twin bed frame supplierWebb3 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 … twin.bed frame wayfairWebbUsing a dedicated kmem_cache for TCP skb->head allocations makes a difference, both in cpu cycles and memory savings. This kmem_cache could also be used for GRO skb allocations, this is left as a future exercise. twin bed frame wayfair