diff options
| author | Susant Sahani <ssahani@users.noreply.github.com> | 2016-11-11 05:04:19 +0530 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2016-11-10 18:34:19 -0500 |
| commit | 9faed222fc92c53b6439f52857403a522cf31bd9 (patch) | |
| tree | a365479256c3b507d1d1423300a0a5bf4c0f8ac1 /src/libsystemd-network/dhcp-network.c | |
| parent | a1ef6bd1e3e690908f886db0cb639b0015c1b704 (diff) | |
| download | systemd-9faed222fc92c53b6439f52857403a522cf31bd9.tar.gz | |
networkd: support setting dhcp client listen port (#4631)
Allow setting custom port for the DHCP client to listen on in networkd.
[DHCP]
ListenPort=6677
Diffstat (limited to 'src/libsystemd-network/dhcp-network.c')
| -rw-r--r-- | src/libsystemd-network/dhcp-network.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/libsystemd-network/dhcp-network.c b/src/libsystemd-network/dhcp-network.c index a9f5a0a5de..3c85bb0b54 100644 --- a/src/libsystemd-network/dhcp-network.c +++ b/src/libsystemd-network/dhcp-network.c @@ -36,7 +36,8 @@ static int _bind_raw_socket(int ifindex, union sockaddr_union *link, size_t mac_addr_len, const uint8_t *bcast_addr, const struct ether_addr *eth_mac, - uint16_t arp_type, uint8_t dhcp_hlen) { + uint16_t arp_type, uint8_t dhcp_hlen, + uint16_t port) { struct sock_filter filter[] = { BPF_STMT(BPF_LD + BPF_W + BPF_LEN, 0), /* A <- packet length */ BPF_JUMP(BPF_JMP + BPF_JGE + BPF_K, sizeof(DHCPPacket), 1, 0), /* packet >= DHCPPacket ? */ @@ -53,7 +54,7 @@ static int _bind_raw_socket(int ifindex, union sockaddr_union *link, BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, 0, 1, 0), /* A == 0 ? */ BPF_STMT(BPF_RET + BPF_K, 0), /* ignore */ BPF_STMT(BPF_LD + BPF_H + BPF_ABS, offsetof(DHCPPacket, udp.dest)), /* A <- UDP destination port */ - BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, DHCP_PORT_CLIENT, 1, 0), /* UDP destination port == DHCP client port ? */ + BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, port, 1, 0), /* UDP destination port == DHCP client port ? */ BPF_STMT(BPF_RET + BPF_K, 0), /* ignore */ BPF_STMT(BPF_LD + BPF_B + BPF_ABS, offsetof(DHCPPacket, dhcp.op)), /* A <- DHCP op */ BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, BOOTREPLY, 1, 0), /* op == BOOTREPLY ? */ @@ -125,7 +126,8 @@ static int _bind_raw_socket(int ifindex, union sockaddr_union *link, int dhcp_network_bind_raw_socket(int ifindex, union sockaddr_union *link, uint32_t xid, const uint8_t *mac_addr, - size_t mac_addr_len, uint16_t arp_type) { + size_t mac_addr_len, uint16_t arp_type, + uint16_t port) { static const uint8_t eth_bcast[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; /* Default broadcast address for IPoIB */ static const uint8_t ib_bcast[] = { @@ -151,7 +153,7 @@ int dhcp_network_bind_raw_socket(int ifindex, union sockaddr_union *link, return -EINVAL; return _bind_raw_socket(ifindex, link, xid, mac_addr, mac_addr_len, - bcast_addr, ð_mac, arp_type, dhcp_hlen); + bcast_addr, ð_mac, arp_type, dhcp_hlen, port); } int dhcp_network_bind_udp_socket(be32_t address, uint16_t port) { |