X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Ftipc%2Fmsg.h;h=ce2659836374c8341d597bfc43d8dcbacf2b3dcf;hb=f894d18380e7e7ff05f6622ccb75d2881922c6e9;hp=662c81862a0c6211441900bc3a428fdf2ce4ae5b;hpb=d65177c1ae7f085723154105c5dc8d9e16ae8265;p=pandora-kernel.git diff --git a/net/tipc/msg.h b/net/tipc/msg.h index 662c81862a0c..7ee6ae238147 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -1,8 +1,8 @@ /* * net/tipc/msg.h: Include file for TIPC message header routines - * - * Copyright (c) 2000-2006, Ericsson AB - * Copyright (c) 2005, Wind River Systems + * + * Copyright (c) 2000-2007, Ericsson AB + * Copyright (c) 2005-2008, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -37,29 +37,27 @@ #ifndef _TIPC_MSG_H #define _TIPC_MSG_H -#include +#include "core.h" #define TIPC_VERSION 2 -#define DATA_LOW TIPC_LOW_IMPORTANCE -#define DATA_MEDIUM TIPC_MEDIUM_IMPORTANCE -#define DATA_HIGH TIPC_HIGH_IMPORTANCE -#define DATA_CRITICAL TIPC_CRITICAL_IMPORTANCE -#define SHORT_H_SIZE 24 /* Connected,in cluster */ + +#define SHORT_H_SIZE 24 /* Connected, in-cluster messages */ #define DIR_MSG_H_SIZE 32 /* Directly addressed messages */ -#define CONN_MSG_H_SIZE 36 /* Routed connected msgs*/ -#define LONG_H_SIZE 40 /* Named Messages */ +#define LONG_H_SIZE 40 /* Named messages */ #define MCAST_H_SIZE 44 /* Multicast messages */ -#define MAX_H_SIZE 60 /* Inclusive full options */ +#define INT_H_SIZE 40 /* Internal messages */ +#define MIN_H_SIZE 24 /* Smallest legal TIPC header size */ +#define MAX_H_SIZE 60 /* Largest possible TIPC header size */ + #define MAX_MSG_SIZE (MAX_H_SIZE + TIPC_MAX_USER_MSG_SIZE) -#define LINK_CONFIG 13 /* TIPC user data message header format, version 2 - + - Fundamental definitions available to privileged TIPC users are located in tipc_msg.h. - - Remaining definitions available to TIPC internal users appear below. + - Remaining definitions available to TIPC internal users appear below. */ @@ -71,11 +69,21 @@ static inline void msg_set_word(struct tipc_msg *m, u32 w, u32 val) static inline void msg_set_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask, u32 val) { - u32 word = msg_word(m,w) & ~(mask << pos); - msg_set_word(m, w, (word |= (val << pos))); + val = (val & mask) << pos; + mask = mask << pos; + m->hdr[w] &= ~htonl(mask); + m->hdr[w] |= htonl(val); +} + +static inline void msg_swap_words(struct tipc_msg *msg, u32 a, u32 b) +{ + u32 temp = msg->hdr[a]; + + msg->hdr[a] = msg->hdr[b]; + msg->hdr[b] = temp; } -/* +/* * Word 0 */ @@ -84,9 +92,9 @@ static inline u32 msg_version(struct tipc_msg *m) return msg_bits(m, 0, 29, 7); } -static inline void msg_set_version(struct tipc_msg *m) +static inline void msg_set_version(struct tipc_msg *m) { - msg_set_bits(m, 0, 29, 0xf, TIPC_VERSION); + msg_set_bits(m, 0, 29, 7, TIPC_VERSION); } static inline u32 msg_user(struct tipc_msg *m) @@ -96,50 +104,50 @@ static inline u32 msg_user(struct tipc_msg *m) static inline u32 msg_isdata(struct tipc_msg *m) { - return (msg_user(m) <= DATA_CRITICAL); + return (msg_user(m) <= TIPC_CRITICAL_IMPORTANCE); } -static inline void msg_set_user(struct tipc_msg *m, u32 n) +static inline void msg_set_user(struct tipc_msg *m, u32 n) { msg_set_bits(m, 0, 25, 0xf, n); } -static inline void msg_set_importance(struct tipc_msg *m, u32 i) +static inline void msg_set_importance(struct tipc_msg *m, u32 i) { msg_set_user(m, i); } -static inline void msg_set_hdr_sz(struct tipc_msg *m,u32 n) +static inline void msg_set_hdr_sz(struct tipc_msg *m,u32 n) { msg_set_bits(m, 0, 21, 0xf, n>>2); } -static inline int msg_non_seq(struct tipc_msg *m) +static inline int msg_non_seq(struct tipc_msg *m) { return msg_bits(m, 0, 20, 1); } -static inline void msg_set_non_seq(struct tipc_msg *m) +static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) { - msg_set_bits(m, 0, 20, 1, 1); + msg_set_bits(m, 0, 20, 1, n); } -static inline int msg_dest_droppable(struct tipc_msg *m) +static inline int msg_dest_droppable(struct tipc_msg *m) { return msg_bits(m, 0, 19, 1); } -static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) +static inline void msg_set_dest_droppable(struct tipc_msg *m, u32 d) { msg_set_bits(m, 0, 19, 1, d); } -static inline int msg_src_droppable(struct tipc_msg *m) +static inline int msg_src_droppable(struct tipc_msg *m) { return msg_bits(m, 0, 18, 1); } -static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) +static inline void msg_set_src_droppable(struct tipc_msg *m, u32 d) { msg_set_bits(m, 0, 18, 1, d); } @@ -150,31 +158,31 @@ static inline void msg_set_size(struct tipc_msg *m, u32 sz) } -/* +/* * Word 1 */ -static inline void msg_set_type(struct tipc_msg *m, u32 n) +static inline void msg_set_type(struct tipc_msg *m, u32 n) { msg_set_bits(m, 1, 29, 0x7, n); } -static inline void msg_set_errcode(struct tipc_msg *m, u32 err) +static inline void msg_set_errcode(struct tipc_msg *m, u32 err) { msg_set_bits(m, 1, 25, 0xf, err); } -static inline u32 msg_reroute_cnt(struct tipc_msg *m) +static inline u32 msg_reroute_cnt(struct tipc_msg *m) { return msg_bits(m, 1, 21, 0xf); } -static inline void msg_incr_reroute_cnt(struct tipc_msg *m) +static inline void msg_incr_reroute_cnt(struct tipc_msg *m) { msg_set_bits(m, 1, 21, 0xf, msg_reroute_cnt(m) + 1); } -static inline void msg_reset_reroute_cnt(struct tipc_msg *m) +static inline void msg_reset_reroute_cnt(struct tipc_msg *m) { msg_set_bits(m, 1, 21, 0xf, 0); } @@ -184,35 +192,23 @@ static inline u32 msg_lookup_scope(struct tipc_msg *m) return msg_bits(m, 1, 19, 0x3); } -static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) +static inline void msg_set_lookup_scope(struct tipc_msg *m, u32 n) { msg_set_bits(m, 1, 19, 0x3, n); } -static inline void msg_set_options(struct tipc_msg *m, const char *opt, u32 sz) -{ - u32 hsz = msg_hdr_sz(m); - char *to = (char *)&m->hdr[hsz/4]; - - if ((hsz < DIR_MSG_H_SIZE) || ((hsz + sz) > MAX_H_SIZE)) - return; - msg_set_bits(m, 1, 16, 0x7, (hsz - 28)/4); - msg_set_hdr_sz(m, hsz + sz); - memcpy(to, opt, sz); -} - static inline u32 msg_bcast_ack(struct tipc_msg *m) { return msg_bits(m, 1, 0, 0xffff); } -static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n) +static inline void msg_set_bcast_ack(struct tipc_msg *m, u32 n) { msg_set_bits(m, 1, 0, 0xffff, n); } -/* +/* * Word 2 */ @@ -221,7 +217,7 @@ static inline u32 msg_ack(struct tipc_msg *m) return msg_bits(m, 2, 16, 0xffff); } -static inline void msg_set_ack(struct tipc_msg *m, u32 n) +static inline void msg_set_ack(struct tipc_msg *m, u32 n) { msg_set_bits(m, 2, 16, 0xffff, n); } @@ -231,48 +227,67 @@ static inline u32 msg_seqno(struct tipc_msg *m) return msg_bits(m, 2, 0, 0xffff); } -static inline void msg_set_seqno(struct tipc_msg *m, u32 n) +static inline void msg_set_seqno(struct tipc_msg *m, u32 n) { msg_set_bits(m, 2, 0, 0xffff, n); } +/* + * TIPC may utilize the "link ack #" and "link seq #" fields of a short + * message header to hold the destination node for the message, since the + * normal "dest node" field isn't present. This cache is only referenced + * when required, so populating the cache of a longer message header is + * harmless (as long as the header has the two link sequence fields present). + * + * Note: Host byte order is OK here, since the info never goes off-card. + */ + +static inline u32 msg_destnode_cache(struct tipc_msg *m) +{ + return m->hdr[2]; +} + +static inline void msg_set_destnode_cache(struct tipc_msg *m, u32 dnode) +{ + m->hdr[2] = dnode; +} -/* +/* * Words 3-10 */ -static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) +static inline void msg_set_prevnode(struct tipc_msg *m, u32 a) { msg_set_word(m, 3, a); } -static inline void msg_set_origport(struct tipc_msg *m, u32 p) +static inline void msg_set_origport(struct tipc_msg *m, u32 p) { msg_set_word(m, 4, p); } -static inline void msg_set_destport(struct tipc_msg *m, u32 p) +static inline void msg_set_destport(struct tipc_msg *m, u32 p) { msg_set_word(m, 5, p); } -static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) +static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p) { msg_set_word(m, 5, p); } -static inline void msg_set_orignode(struct tipc_msg *m, u32 a) +static inline void msg_set_orignode(struct tipc_msg *m, u32 a) { msg_set_word(m, 6, a); } -static inline void msg_set_destnode(struct tipc_msg *m, u32 a) +static inline void msg_set_destnode(struct tipc_msg *m, u32 a) { msg_set_word(m, 7, a); } -static inline int msg_is_dest(struct tipc_msg *m, u32 d) +static inline int msg_is_dest(struct tipc_msg *m, u32 d) { return(msg_short(m) || (msg_destnode(m) == d)); } @@ -284,7 +299,7 @@ static inline u32 msg_routed(struct tipc_msg *m) return(msg_destnode(m) ^ msg_orignode(m)) >> 11; } -static inline void msg_set_nametype(struct tipc_msg *m, u32 n) +static inline void msg_set_nametype(struct tipc_msg *m, u32 n) { msg_set_word(m, 8, n); } @@ -309,17 +324,17 @@ static inline void msg_set_transp_seqno(struct tipc_msg *m, u32 n) msg_set_word(m, 8, n); } -static inline void msg_set_namelower(struct tipc_msg *m, u32 n) +static inline void msg_set_namelower(struct tipc_msg *m, u32 n) { msg_set_word(m, 9, n); } -static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) +static inline void msg_set_nameinst(struct tipc_msg *m, u32 n) { msg_set_namelower(m, n); } -static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) +static inline void msg_set_nameupper(struct tipc_msg *m, u32 n) { msg_set_word(m, 10, n); } @@ -329,26 +344,15 @@ static inline struct tipc_msg *msg_get_wrapped(struct tipc_msg *m) return (struct tipc_msg *)msg_data(m); } -static inline void msg_expand(struct tipc_msg *m, u32 destnode) -{ - if (!msg_short(m)) - return; - msg_set_hdr_sz(m, LONG_H_SIZE); - msg_set_orignode(m, msg_prevnode(m)); - msg_set_destnode(m, destnode); - memset(&m->hdr[8], 0, 12); -} - - /* TIPC internal message header format, version 2 - 1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0 + 1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ w0:|vers |msg usr|hdr sz |n|resrv| packet size | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - w1:|m typ|rsv=0| sequence gap | broadcast ack no | + w1:|m typ| sequence gap | broadcast ack no | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ w2:| link level ack no/bc_gap_from | seq no / bcast_gap_to | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ @@ -372,9 +376,9 @@ static inline void msg_expand(struct tipc_msg *m, u32 destnode) +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ NB: CONN_MANAGER use data message format. LINK_CONFIG has own format. -*/ +*/ -/* +/* * Internal users */ @@ -387,10 +391,9 @@ static inline void msg_expand(struct tipc_msg *m, u32 destnode) #define NAME_DISTRIBUTOR 11 #define MSG_FRAGMENTER 12 #define LINK_CONFIG 13 -#define INT_H_SIZE 40 #define DSC_H_SIZE 40 -/* +/* * Connection management protocol messages */ @@ -398,7 +401,7 @@ static inline void msg_expand(struct tipc_msg *m, u32 destnode) #define CONN_PROBE_REPLY 1 #define CONN_ACK 2 -/* +/* * Name distributor messages */ @@ -406,18 +409,18 @@ static inline void msg_expand(struct tipc_msg *m, u32 destnode) #define WITHDRAWAL 1 -/* +/* * Word 1 */ static inline u32 msg_seq_gap(struct tipc_msg *m) { - return msg_bits(m, 1, 16, 0xff); + return msg_bits(m, 1, 16, 0x1fff); } static inline void msg_set_seq_gap(struct tipc_msg *m, u32 n) { - msg_set_bits(m, 1, 16, 0xff, n); + msg_set_bits(m, 1, 16, 0x1fff, n); } static inline u32 msg_req_links(struct tipc_msg *m) @@ -425,13 +428,13 @@ static inline u32 msg_req_links(struct tipc_msg *m) return msg_bits(m, 1, 16, 0xfff); } -static inline void msg_set_req_links(struct tipc_msg *m, u32 n) +static inline void msg_set_req_links(struct tipc_msg *m, u32 n) { msg_set_bits(m, 1, 16, 0xfff, n); } -/* +/* * Word 2 */ @@ -440,7 +443,7 @@ static inline u32 msg_dest_domain(struct tipc_msg *m) return msg_word(m, 2); } -static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) +static inline void msg_set_dest_domain(struct tipc_msg *m, u32 n) { msg_set_word(m, 2, n); } @@ -460,13 +463,13 @@ static inline u32 msg_bcgap_to(struct tipc_msg *m) return msg_bits(m, 2, 0, 0xffff); } -static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) +static inline void msg_set_bcgap_to(struct tipc_msg *m, u32 n) { msg_set_bits(m, 2, 0, 0xffff, n); } -/* +/* * Word 4 */ @@ -533,7 +536,7 @@ static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) msg_set_bits(m, 4, 0, 1, (n & 1)); } -/* +/* * Word 5 */ @@ -603,7 +606,7 @@ static inline void msg_clear_redundant_link(struct tipc_msg *m) } -/* +/* * Word 9 */ @@ -627,12 +630,12 @@ static inline void msg_set_bcast_tag(struct tipc_msg *m, u32 n) msg_set_bits(m, 9, 16, 0xffff, n); } -static inline u32 msg_max_pkt(struct tipc_msg *m) +static inline u32 msg_max_pkt(struct tipc_msg *m) { return (msg_bits(m, 9, 16, 0xffff) * 4); } -static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) +static inline void msg_set_max_pkt(struct tipc_msg *m, u32 n) { msg_set_bits(m, 9, 16, 0xffff, (n / 4)); } @@ -647,7 +650,7 @@ static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) msg_set_bits(m, 9, 0, 0xffff, n); } -/* +/* * Routing table message data */ @@ -662,17 +665,12 @@ static inline void msg_set_remote_node(struct tipc_msg *m, u32 a) msg_set_word(m, msg_hdr_sz(m)/4, a); } -static inline int msg_dataoctet(struct tipc_msg *m, u32 pos) -{ - return(msg_data(m)[pos + 4] != 0); -} - static inline void msg_set_dataoctet(struct tipc_msg *m, u32 pos) { msg_data(m)[pos + 4] = 1; } -/* +/* * Segmentation message types */ @@ -680,7 +678,7 @@ static inline void msg_set_dataoctet(struct tipc_msg *m, u32 pos) #define FRAGMENT 1 #define LAST_FRAGMENT 2 -/* +/* * Link management protocol message types */ @@ -688,13 +686,13 @@ static inline void msg_set_dataoctet(struct tipc_msg *m, u32 pos) #define RESET_MSG 1 #define ACTIVATE_MSG 2 -/* +/* * Changeover tunnel message types */ #define DUPLICATE_MSG 0 #define ORIGINAL_MSG 1 -/* +/* * Routing table message types */ #define EXT_ROUTING_TABLE 0 @@ -703,7 +701,7 @@ static inline void msg_set_dataoctet(struct tipc_msg *m, u32 pos) #define ROUTE_ADDITION 3 #define ROUTE_REMOVAL 4 -/* +/* * Config protocol message types */ @@ -724,8 +722,8 @@ static inline u32 msg_tot_importance(struct tipc_msg *m) } -static inline void msg_init(struct tipc_msg *m, u32 user, u32 type, - u32 err, u32 hsize, u32 destnode) +static inline void msg_init(struct tipc_msg *m, u32 user, u32 type, + u32 hsize, u32 destnode) { memset(m, 0, hsize); msg_set_version(m); @@ -734,14 +732,13 @@ static inline void msg_init(struct tipc_msg *m, u32 user, u32 type, msg_set_size(m, hsize); msg_set_prevnode(m, tipc_own_addr); msg_set_type(m, type); - msg_set_errcode(m, err); if (!msg_short(m)) { msg_set_orignode(m, tipc_own_addr); msg_set_destnode(m, destnode); } } -/** +/** * msg_calc_data_size - determine total data size for message */ @@ -755,15 +752,15 @@ static inline int msg_calc_data_size(struct iovec const *msg_sect, u32 num_sect) return dsz; } -/** +/** * msg_build - create message using specified header and data - * + * * Note: Caller must not hold any locks in case copy_from_user() is interrupted! - * + * * Returns message data size or errno */ -static inline int msg_build(struct tipc_msg *hdr, +static inline int msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect, u32 num_sect, int max_size, int usrmem, struct sk_buff** buf) { @@ -786,15 +783,16 @@ static inline int msg_build(struct tipc_msg *hdr, *buf = buf_acquire(sz); if (!(*buf)) return -ENOMEM; - memcpy((*buf)->data, (unchar *)hdr, hsz); + skb_copy_to_linear_data(*buf, hdr, hsz); for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) { if (likely(usrmem)) - res = !copy_from_user((*buf)->data + pos, - msg_sect[cnt].iov_base, + res = !copy_from_user((*buf)->data + pos, + msg_sect[cnt].iov_base, msg_sect[cnt].iov_len); else - memcpy((*buf)->data + pos, msg_sect[cnt].iov_base, - msg_sect[cnt].iov_len); + skb_copy_to_linear_data_offset(*buf, pos, + msg_sect[cnt].iov_base, + msg_sect[cnt].iov_len); pos += msg_sect[cnt].iov_len; } if (likely(res)) @@ -805,14 +803,14 @@ static inline int msg_build(struct tipc_msg *hdr, return -EFAULT; } +static inline void msg_set_media_addr(struct tipc_msg *m, struct tipc_media_addr *a) +{ + memcpy(&((int *)m)[5], a, sizeof(*a)); +} -struct tipc_media_addr; - -extern void msg_set_media_addr(struct tipc_msg *m, - struct tipc_media_addr *a); - -extern void msg_get_media_addr(struct tipc_msg *m, - struct tipc_media_addr *a); - +static inline void msg_get_media_addr(struct tipc_msg *m, struct tipc_media_addr *a) +{ + memcpy(a, &((int*)m)[5], sizeof(*a)); +} #endif