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conf, dhcp, ndp: Fix message about default MTU, make NDP consistent
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
parent
8e9333616a
commit
ec2b58ea4d
3 changed files with 16 additions and 4 deletions
15
conf.c
15
conf.c
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@ -617,7 +617,9 @@ static void usage(const char *name)
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info(" /tmp/passt_ISO8601-TIMESTAMP_INSTANCE-NUMBER.pcap");
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info( " -m, --mtu MTU Assign MTU via DHCP/NDP");
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info( " default: no MTU assigned via DHCP/NDP options");
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info( " a zero value disables assignment");
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info( " default: 65520: maximum 802.3 MTU minus 802.3 header");
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info( " length, rounded to 32 bits (IPv4 words)");
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info( " -a, --address ADDR Assign IPv4 or IPv6 address ADDR");
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info( " can be specified zero to two times (for IPv4 and IPv6)");
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info( " default: use addresses from interface with default route");
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@ -954,6 +956,12 @@ void conf(struct ctx *c, int argc, char **argv)
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errno = 0;
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c->mtu = strtol(optarg, NULL, 0);
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if (!c->mtu) {
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c->mtu = -1;
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break;
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}
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if (c->mtu < ETH_MIN_MTU || c->mtu > (int)ETH_MAX_MTU ||
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errno) {
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err("Invalid MTU: %s", optarg);
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@ -1132,6 +1140,11 @@ void conf(struct ctx *c, int argc, char **argv)
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}
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}
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if (!c->mtu) {
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c->mtu = (ETH_MAX_MTU - ETH_HLEN) /
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sizeof(uint32_t) * sizeof(uint32_t);
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}
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get_routes(c);
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get_addrs(c);
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