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authorVadim Kochan <vadim4j@gmail.com>2016-01-26 22:25:01 +0200
committerTobias Klauser <tklauser@distanz.ch>2016-01-28 16:14:53 +0100
commit2ab562f1a46ffbc459146420caa86e400fa1b9e2 (patch)
treebd96bda5a66f3ff92cff417fa267577dde0b970b
parentb5100e276763a03c255dd1e7a4147c55c901419c (diff)
trafgen: proto: Add function to set field from device MAC
Add helper function to set device's MAC address to protocol field which may be used by Ethernet & ARP protocol header generation functions. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
-rw-r--r--trafgen_proto.c31
-rw-r--r--trafgen_proto.h3
2 files changed, 34 insertions, 0 deletions
diff --git a/trafgen_proto.c b/trafgen_proto.c
index 15c48d4..cf2541f 100644
--- a/trafgen_proto.c
+++ b/trafgen_proto.c
@@ -5,7 +5,9 @@
#include <stddef.h>
#include <string.h>
+#include <linux/if_ether.h>
+#include "dev.h"
#include "xmalloc.h"
#include "trafgen_conf.h"
#include "trafgen_proto.h"
@@ -289,6 +291,35 @@ void proto_field_set_default_be32(struct proto_hdr *hdr, uint32_t fid, uint32_t
__proto_field_set_bytes(hdr, fid, (uint8_t *)&val, true, true);
}
+static void __proto_field_set_dev_mac(struct proto_hdr *hdr, uint32_t fid,
+ bool is_default)
+{
+ uint8_t mac[ETH_ALEN];
+ int ret;
+
+ if (proto_field_is_set(hdr, fid))
+ return;
+
+ if (!hdr->ctx->dev)
+ panic("Device is not specified\n");
+
+ ret = device_hw_address(hdr->ctx->dev, mac, sizeof(mac));
+ if (ret < 0)
+ panic("Could not get device hw adress\n");
+
+ __proto_field_set_bytes(hdr, fid, mac, is_default, false);
+}
+
+void proto_field_set_dev_mac(struct proto_hdr *hdr, uint32_t fid)
+{
+ __proto_field_set_dev_mac(hdr, fid, false);
+}
+
+void proto_field_set_default_dev_mac(struct proto_hdr *hdr, uint32_t fid)
+{
+ __proto_field_set_dev_mac(hdr, fid, true);
+}
+
void protos_init(const char *dev)
{
struct proto_hdr *p;
diff --git a/trafgen_proto.h b/trafgen_proto.h
index 8f1f201..517b278 100644
--- a/trafgen_proto.h
+++ b/trafgen_proto.h
@@ -94,4 +94,7 @@ extern void proto_field_set_default_be16(struct proto_hdr *hdr, uint32_t fid,
extern void proto_field_set_default_be32(struct proto_hdr *hdr, uint32_t fid,
uint32_t val);
+extern void proto_field_set_dev_mac(struct proto_hdr *hdr, uint32_t fid);
+extern void proto_field_set_default_dev_mac(struct proto_hdr *hdr, uint32_t fid);
+
#endif /* TRAFGEN_PROTO_I_H */