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author | David S. Miller <davem@davemloft.net> | 2012-07-12 15:18:45 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2012-07-12 15:18:45 (GMT) |
commit | 10b0a7732e04aeb7e21fe7dc3b8249a3041eab28 (patch) | |
tree | 01faf58d03868e684bc784ab44e5f7714e8d7ee3 | |
parent | d3bd3a5eeb087bf6a06e9bdfc589096608f933a0 (diff) | |
parent | 5d91efa8dd8ced8647798d067f2ac8125194be58 (diff) | |
download | linux-fsl-qoriq-10b0a7732e04aeb7e21fe7dc3b8249a3041eab28.tar.xz |
Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next
-rw-r--r-- | net/can/gw.c | 90 |
1 files changed, 33 insertions, 57 deletions
diff --git a/net/can/gw.c b/net/can/gw.c index b41acf2..b54d5e6 100644 --- a/net/can/gw.c +++ b/net/can/gw.c @@ -444,11 +444,14 @@ static int cgw_notifier(struct notifier_block *nb, return NOTIFY_DONE; } -static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) +static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj, int type, + u32 pid, u32 seq, int flags) { struct cgw_frame_mod mb; struct rtcanmsg *rtcan; - struct nlmsghdr *nlh = nlmsg_put(skb, 0, 0, 0, sizeof(*rtcan), 0); + struct nlmsghdr *nlh; + + nlh = nlmsg_put(skb, pid, seq, type, sizeof(*rtcan), flags); if (!nlh) return -EMSGSIZE; @@ -462,15 +465,11 @@ static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) if (gwj->handled_frames) { if (nla_put_u32(skb, CGW_HANDLED, gwj->handled_frames) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32)); } if (gwj->dropped_frames) { if (nla_put_u32(skb, CGW_DROPPED, gwj->dropped_frames) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32)); } /* check non default settings of attributes */ @@ -480,8 +479,6 @@ static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) mb.modtype = gwj->mod.modtype.and; if (nla_put(skb, CGW_MOD_AND, sizeof(mb), &mb) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb)); } if (gwj->mod.modtype.or) { @@ -489,8 +486,6 @@ static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) mb.modtype = gwj->mod.modtype.or; if (nla_put(skb, CGW_MOD_OR, sizeof(mb), &mb) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb)); } if (gwj->mod.modtype.xor) { @@ -498,8 +493,6 @@ static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) mb.modtype = gwj->mod.modtype.xor; if (nla_put(skb, CGW_MOD_XOR, sizeof(mb), &mb) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb)); } if (gwj->mod.modtype.set) { @@ -507,26 +500,18 @@ static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) mb.modtype = gwj->mod.modtype.set; if (nla_put(skb, CGW_MOD_SET, sizeof(mb), &mb) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(mb)); } if (gwj->mod.csumfunc.crc8) { if (nla_put(skb, CGW_CS_CRC8, CGW_CS_CRC8_LEN, &gwj->mod.csum.crc8) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + \ - NLA_ALIGN(CGW_CS_CRC8_LEN); } if (gwj->mod.csumfunc.xor) { if (nla_put(skb, CGW_CS_XOR, CGW_CS_XOR_LEN, &gwj->mod.csum.xor) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + \ - NLA_ALIGN(CGW_CS_XOR_LEN); } if (gwj->gwtype == CGW_TYPE_CAN_CAN) { @@ -535,23 +520,16 @@ static int cgw_put_job(struct sk_buff *skb, struct cgw_job *gwj) if (nla_put(skb, CGW_FILTER, sizeof(struct can_filter), &gwj->ccgw.filter) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + - NLA_ALIGN(sizeof(struct can_filter)); } if (nla_put_u32(skb, CGW_SRC_IF, gwj->ccgw.src_idx) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32)); if (nla_put_u32(skb, CGW_DST_IF, gwj->ccgw.dst_idx) < 0) goto cancel; - else - nlh->nlmsg_len += NLA_HDRLEN + NLA_ALIGN(sizeof(u32)); } - return skb->len; + return nlmsg_end(skb, nlh); cancel: nlmsg_cancel(skb, nlh); @@ -571,7 +549,8 @@ static int cgw_dump_jobs(struct sk_buff *skb, struct netlink_callback *cb) if (idx < s_idx) goto cont; - if (cgw_put_job(skb, gwj) < 0) + if (cgw_put_job(skb, gwj, RTM_NEWROUTE, NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, NLM_F_MULTI) < 0) break; cont: idx++; @@ -583,6 +562,18 @@ cont: return skb->len; } +static const struct nla_policy cgw_policy[CGW_MAX+1] = { + [CGW_MOD_AND] = { .len = sizeof(struct cgw_frame_mod) }, + [CGW_MOD_OR] = { .len = sizeof(struct cgw_frame_mod) }, + [CGW_MOD_XOR] = { .len = sizeof(struct cgw_frame_mod) }, + [CGW_MOD_SET] = { .len = sizeof(struct cgw_frame_mod) }, + [CGW_CS_XOR] = { .len = sizeof(struct cgw_csum_xor) }, + [CGW_CS_CRC8] = { .len = sizeof(struct cgw_csum_crc8) }, + [CGW_SRC_IF] = { .type = NLA_U32 }, + [CGW_DST_IF] = { .type = NLA_U32 }, + [CGW_FILTER] = { .len = sizeof(struct can_filter) }, +}; + /* check for common and gwtype specific attributes */ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, u8 gwtype, void *gwtypeattr) @@ -595,14 +586,14 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, /* initialize modification & checksum data space */ memset(mod, 0, sizeof(*mod)); - err = nlmsg_parse(nlh, sizeof(struct rtcanmsg), tb, CGW_MAX, NULL); + err = nlmsg_parse(nlh, sizeof(struct rtcanmsg), tb, CGW_MAX, + cgw_policy); if (err < 0) return err; /* check for AND/OR/XOR/SET modifications */ - if (tb[CGW_MOD_AND] && - nla_len(tb[CGW_MOD_AND]) == CGW_MODATTR_LEN) { + if (tb[CGW_MOD_AND]) { nla_memcpy(&mb, tb[CGW_MOD_AND], CGW_MODATTR_LEN); canframecpy(&mod->modframe.and, &mb.cf); @@ -618,8 +609,7 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, mod->modfunc[modidx++] = mod_and_data; } - if (tb[CGW_MOD_OR] && - nla_len(tb[CGW_MOD_OR]) == CGW_MODATTR_LEN) { + if (tb[CGW_MOD_OR]) { nla_memcpy(&mb, tb[CGW_MOD_OR], CGW_MODATTR_LEN); canframecpy(&mod->modframe.or, &mb.cf); @@ -635,8 +625,7 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, mod->modfunc[modidx++] = mod_or_data; } - if (tb[CGW_MOD_XOR] && - nla_len(tb[CGW_MOD_XOR]) == CGW_MODATTR_LEN) { + if (tb[CGW_MOD_XOR]) { nla_memcpy(&mb, tb[CGW_MOD_XOR], CGW_MODATTR_LEN); canframecpy(&mod->modframe.xor, &mb.cf); @@ -652,8 +641,7 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, mod->modfunc[modidx++] = mod_xor_data; } - if (tb[CGW_MOD_SET] && - nla_len(tb[CGW_MOD_SET]) == CGW_MODATTR_LEN) { + if (tb[CGW_MOD_SET]) { nla_memcpy(&mb, tb[CGW_MOD_SET], CGW_MODATTR_LEN); canframecpy(&mod->modframe.set, &mb.cf); @@ -672,11 +660,8 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, /* check for checksum operations after CAN frame modifications */ if (modidx) { - if (tb[CGW_CS_CRC8] && - nla_len(tb[CGW_CS_CRC8]) == CGW_CS_CRC8_LEN) { - - struct cgw_csum_crc8 *c = (struct cgw_csum_crc8 *)\ - nla_data(tb[CGW_CS_CRC8]); + if (tb[CGW_CS_CRC8]) { + struct cgw_csum_crc8 *c = nla_data(tb[CGW_CS_CRC8]); err = cgw_chk_csum_parms(c->from_idx, c->to_idx, c->result_idx); @@ -699,11 +684,8 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, mod->csumfunc.crc8 = cgw_csum_crc8_neg; } - if (tb[CGW_CS_XOR] && - nla_len(tb[CGW_CS_XOR]) == CGW_CS_XOR_LEN) { - - struct cgw_csum_xor *c = (struct cgw_csum_xor *)\ - nla_data(tb[CGW_CS_XOR]); + if (tb[CGW_CS_XOR]) { + struct cgw_csum_xor *c = nla_data(tb[CGW_CS_XOR]); err = cgw_chk_csum_parms(c->from_idx, c->to_idx, c->result_idx); @@ -735,8 +717,7 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, memset(ccgw, 0, sizeof(*ccgw)); /* check for can_filter in attributes */ - if (tb[CGW_FILTER] && - nla_len(tb[CGW_FILTER]) == sizeof(struct can_filter)) + if (tb[CGW_FILTER]) nla_memcpy(&ccgw->filter, tb[CGW_FILTER], sizeof(struct can_filter)); @@ -746,13 +727,8 @@ static int cgw_parse_attr(struct nlmsghdr *nlh, struct cf_mod *mod, if (!tb[CGW_SRC_IF] || !tb[CGW_DST_IF]) return err; - if (nla_len(tb[CGW_SRC_IF]) == sizeof(u32)) - nla_memcpy(&ccgw->src_idx, tb[CGW_SRC_IF], - sizeof(u32)); - - if (nla_len(tb[CGW_DST_IF]) == sizeof(u32)) - nla_memcpy(&ccgw->dst_idx, tb[CGW_DST_IF], - sizeof(u32)); + ccgw->src_idx = nla_get_u32(tb[CGW_SRC_IF]); + ccgw->dst_idx = nla_get_u32(tb[CGW_DST_IF]); /* both indices set to 0 for flushing all routing entries */ if (!ccgw->src_idx && !ccgw->dst_idx) |