bgpd: Cleanup related to SRv6

Remove unused SRv6 code. Signed-off-by: Carmine Scarpitta <[email protected]>
FRRouting · Apr 3, 2024 · 025a328 · 025a328
1 parent c2e10c0
commit 025a328
Showing 1 changed file with 0 additions and 94 deletions.
diff --git a/bgpd/bgp_mplsvpn.c b/bgpd/bgp_mplsvpn.c
@@ -642,100 +642,6 @@ static bool sid_exist(struct bgp *bgp, const struct in6_addr *sid)
 	return false;
 }
 
-/*
- * This function generates a new SID based on bgp->srv6_locator_chunks and
- * index. The locator and generated SID are stored in arguments sid_locator
- * and sid, respectively.
- *
- * if index != 0: try to allocate as index-mode
- * else: try to allocate as auto-mode
- */
-static uint32_t alloc_new_sid(struct bgp *bgp, uint32_t index,
-			      struct srv6_locator_chunk *sid_locator_chunk,
-			      struct in6_addr *sid)
-{
-	int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL);
-	struct listnode *node;
-	struct srv6_locator_chunk *chunk;
-	bool alloced = false;
-	int label = 0;
-	uint8_t offset = 0;
-	uint8_t func_len = 0, shift_len = 0;
-	uint32_t index_max = 0;
-
-	if (!bgp || !sid_locator_chunk || !sid)
-		return false;
-
-	for (ALL_LIST_ELEMENTS_RO(bgp->srv6_locator_chunks, node, chunk)) {
-		if (chunk->function_bits_length >
-		    BGP_PREFIX_SID_SRV6_MAX_FUNCTION_LENGTH) {
-			if (debug)
-				zlog_debug(
-					"%s: invalid SRv6 Locator chunk (%pFX): Function Length must be less or equal to %d",
-					__func__, &chunk->prefix,
-					BGP_PREFIX_SID_SRV6_MAX_FUNCTION_LENGTH);
-			continue;
-		}
-
-		index_max = (1 << chunk->function_bits_length) - 1;
-
-		if (index > index_max) {
-			if (debug)
-				zlog_debug(
-					"%s: skipped SRv6 Locator chunk (%pFX): Function Length is too short to support specified index (%u)",
-					__func__, &chunk->prefix, index);
-			continue;
-		}
-
-		*sid = chunk->prefix.prefix;
-		*sid_locator_chunk = *chunk;
-		offset = chunk->block_bits_length + chunk->node_bits_length;
-		func_len = chunk->function_bits_length;
-		shift_len = BGP_PREFIX_SID_SRV6_MAX_FUNCTION_LENGTH - func_len;
-
-		if (index != 0) {
-			label = index << shift_len;
-			if (label < MPLS_LABEL_UNRESERVED_MIN) {
-				if (debug)
-					zlog_debug(
-						"%s: skipped to allocate SRv6 SID (%pFX): Label (%u) is too small to use",
-						__func__, &chunk->prefix,
-						label);
-				continue;
-			}
-
-			transpose_sid(sid, label, offset, func_len);
-			if (sid_exist(bgp, sid))
-				continue;
-			alloced = true;
-			break;
-		}
-
-		for (uint32_t i = 1; i < index_max; i++) {
-			label = i << shift_len;
-			if (label < MPLS_LABEL_UNRESERVED_MIN) {
-				if (debug)
-					zlog_debug(
-						"%s: skipped to allocate SRv6 SID (%pFX): Label (%u) is too small to use",
-						__func__, &chunk->prefix,
-						label);
-				continue;
-			}
-			transpose_sid(sid, label, offset, func_len);
-			if (sid_exist(bgp, sid))
-				continue;
-			alloced = true;
-			break;
-		}
-	}
-
-	if (!alloced)
-		return 0;
-
-	sid_register(bgp, sid, bgp->srv6_locator_name);
-	return label;
-}
-
 /**
  * Return the SRv6 SID value obtained composing the LOCATOR and FUNCTION.
  *