{"id":4181,"date":"2022-12-20T17:39:38","date_gmt":"2022-12-20T20:39:38","guid":{"rendered":"http:\/\/lode.uno\/linux-man\/index.php\/2022\/12\/20\/skb_insert-man9\/"},"modified":"2022-12-20T17:39:38","modified_gmt":"2022-12-20T20:39:38","slug":"skb_insert-man9","status":"publish","type":"post","link":"https:\/\/lode.uno\/linux-man\/2022\/12\/20\/skb_insert-man9\/","title":{"rendered":"SKB_INSERT (man9)"},"content":{"rendered":"

SKB_INSERT<\/h1>\n

NAME<\/a>
SYNOPSIS<\/a>
DESCRIPTION<\/a>
RETURN VALUE<\/a>
NOTES<\/a>
AVAILABILITY<\/a>
SEE ALSO<\/a>
AUTHOR<\/a> <\/p>\n

\n

NAME <\/a> <\/h2>\n

__skb_insert, skb_insert, skb_append \u2212 insert an sk_buff into a list<\/p>\n

SYNOPSIS <\/a> <\/h2>\n

#include <\/b><\/p>\n\n\n
<\/td>\n\n

void __skb_insert(struct sk_buff<\/b> *newsk<\/i>, struct sk_buff<\/b> *prev<\/i>, struct sk_buff<\/b> *next<\/i>, struct sk_buff_head<\/b> *list<\/i>)<\/b><\/p>\n<\/td>\n<\/tr>\n<\/table>\n

void skb_insert(struct sk_buff<\/b> *old<\/i>, struct sk_buff<\/b> *newsk<\/i>)<\/b><\/p>\n<\/table>\n

void skb_append(struct sk_buff<\/b> *old<\/i>, struct sk_buff<\/b> *newsk<\/i>)<\/b><\/p>\n

DESCRIPTION <\/a> <\/h2>\n

skb_insert<\/b> and skb_append<\/b> are essentially wrapper functions for __skb_insert<\/b> (see NOTES<\/b>, below.) __skb_insert<\/b> inserts newsk<\/i> into list<\/i>, and resets the appropriate next and prev pointers. prev<\/i> and next<\/i> are used to frame newsk<\/i> in list<\/i>. After setting the next and prev pointers in newsk<\/i>, __skb_insert<\/b> sets the prev pointer in next<\/i> and the next pointer in prev<\/i>, sets the list pointer in newsk<\/i>, and increments the qlen counter in list<\/i>.<\/p>\n

skb_insert<\/b> and skb_append<\/b> should be used to add sk_buffs to a list rather than performing this task manually; in addition to performing this task in a standardized way, these functions also provide for interrupt diasabling and prevent list mangling. Both of these functions use the list pointer in old<\/i> to determine to which list newsk<\/i> should be attached.<\/p>\n

The skb_insert<\/b> function adds newsk<\/i> to the list before old<\/i>.<\/p>\n

The skb_append<\/b> function adds newsk<\/i> to the list after old<\/i>.<\/p>\n

RETURN VALUE <\/a> <\/h2>\n

None.<\/p>\n

NOTES <\/a> <\/h2>\n

It is important to note the difference between not only skb_insert<\/b>, skb_append<\/b> and __skb_insert<\/b>, but all the __skb_<\/b> functions and their skb_<\/b> counterparts. Essentially, the __skb_<\/b> functions are non-atomic, and should only be used with interrupts disabled. As a convenience, the skb_<\/b> functions are provided, which perform interrupt disable \/ enable wrapper functionality in addition to performing their specific tasks.<\/p>\n

AVAILABILITY <\/a> <\/h2>\n

Linux 1.0+<\/p>\n

SEE ALSO <\/a> <\/h2>\n

intro<\/b>(9), skb_queue_head<\/b>(9), skb_queue_tail<\/b>(9)<\/p>\n

\/usr\/src\/linux\/net\/ax25\/af_ax25.c \/usr\/src\/linux\/net\/core\/skbuff.c \/usr\/src\/linux\/net\/ipv4\/tcp_input.c \/usr\/src\/linux\/net\/netrom\/nr_in.c<\/p>\n

AUTHOR <\/a> <\/h2>\n

Cyrus Durgin <\/p>\n

\n","protected":false},"excerpt":{"rendered":"

__skb_insert, skb_insert, skb_append \u2212 insert an sk_buff into a list <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1222],"tags":[1226,1223,1225,1261],"class_list":["post-4181","post","type-post","status-publish","format-standard","hentry","category-9-rutinas-del-nucleo","tag-1226","tag-kernel","tag-man9","tag-skb_insert"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/4181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=4181"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/4181\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=4181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=4181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=4181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}