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m_vlan: style cleanups 

Break long lines and make duplicated code into function.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2017-11-26 12:28:55 -08:00
parent b021ee40f6
commit eb4bccf12b
1 changed files with 34 additions and 37 deletions
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71
tc/m_vlan.c
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@ -27,13 +27,14 @@ static const char * const action_names[] = {
static void explain(void)
{
fprintf(stderr, "Usage: vlan pop\n");
fprintf(stderr, " vlan push [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n");
fprintf(stderr, " vlan modify [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n");
fprintf(stderr, " VLANPROTO is one of 802.1Q or 802.1AD\n");
fprintf(stderr, " with default: 802.1Q\n");
fprintf(stderr, " CONTROL := reclassify | pipe | drop | continue | pass |\n");
fprintf(stderr, " goto chain <CHAIN_INDEX>\n");
fprintf(stderr,
"Usage: vlan pop\n"
" vlan push [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"
" vlan modify [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"
" VLANPROTO is one of 802.1Q or 802.1AD\n"
" with default: 802.1Q\n"
" CONTROL := reclassify | pipe | drop | continue | pass |\n"
" goto chain <CHAIN_INDEX>\n");
}
static void usage(void)
@ -47,6 +48,14 @@ static bool has_push_attribs(int action)
return action == TCA_VLAN_ACT_PUSH || action == TCA_VLAN_ACT_MODIFY;
}
static void unexpected(const char *arg)
{
fprintf(stderr,
"unexpected \"%s\" - action already specified\n",
arg);
explain();
}
static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p,
int tca_id, struct nlmsghdr *n)
{
@ -70,57 +79,42 @@ static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p,
while (argc > 0) {
if (matches(*argv, "pop") == 0) {
if (action) {
fprintf(stderr, "unexpected \"%s\" - action already specified\n",
*argv);
explain();
unexpected(*argv);
return -1;
}
action = TCA_VLAN_ACT_POP;
} else if (matches(*argv, "push") == 0) {
if (action) {
fprintf(stderr, "unexpected \"%s\" - action already specified\n",
*argv);
explain();
unexpected(*argv);
return -1;
}
action = TCA_VLAN_ACT_PUSH;
} else if (matches(*argv, "modify") == 0) {
if (action) {
fprintf(stderr, "unexpected \"%s\" - action already specified\n",
*argv);
explain();
unexpected(*argv);
return -1;
}
action = TCA_VLAN_ACT_MODIFY;
} else if (matches(*argv, "id") == 0) {
if (!has_push_attribs(action)) {
fprintf(stderr, "\"%s\" is only valid for push/modify\n",
*argv);
explain();
return -1;
}
if (!has_push_attribs(action))
invarg("only valid for push/modify", *argv);
NEXT_ARG();
if (get_u16(&id, *argv, 0))
invarg("id is invalid", *argv);
id_set = 1;
} else if (matches(*argv, "protocol") == 0) {
if (!has_push_attribs(action)) {
fprintf(stderr, "\"%s\" is only valid for push/modify\n",
*argv);
explain();
return -1;
}
if (!has_push_attribs(action))
invarg("only valid for push/modify", *argv);
NEXT_ARG();
if (ll_proto_a2n(&proto, *argv))
invarg("protocol is invalid", *argv);
proto_set = 1;
} else if (matches(*argv, "priority") == 0) {
if (!has_push_attribs(action)) {
fprintf(stderr, "\"%s\" is only valid for push/modify\n",
*argv);
explain();
return -1;
}
if (!has_push_attribs(action))
invarg("only valid for push/modify", *argv);
NEXT_ARG();
if (get_u8(&prio, *argv, 0) || (prio & ~0x7))
invarg("prio is invalid", *argv);
@ -201,7 +195,8 @@ static int print_vlan(struct action_util *au, FILE *f, struct rtattr *arg)
parm = RTA_DATA(tb[TCA_VLAN_PARMS]);
print_string(PRINT_ANY, "kind", "%s ", "vlan");
print_string(PRINT_ANY, "vlan_action", " %s", action_names[parm->v_action]);
print_string(PRINT_ANY, "vlan_action", " %s",
action_names[parm->v_action]);
switch (parm->v_action) {
case TCA_VLAN_ACT_PUSH:
@ -211,9 +206,11 @@ static int print_vlan(struct action_util *au, FILE *f, struct rtattr *arg)
print_uint(PRINT_ANY, "id", " id %u", val);
}
if (tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]) {
__u16 proto;
proto = rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]);
print_string(PRINT_ANY, "protocol", " protocol %s",
ll_proto_n2a(rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]),
b1, sizeof(b1)));
ll_proto_n2a(proto, b1, sizeof(b1)));
}
if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY]) {
val = rta_getattr_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]);