drivers/net/wireless/intel/iwlwifi/mvm/offloading.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/intel/iwlwifi/mvm/offloading.c
Extension
.c
Size
6097 bytes
Lines
215
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
			nsc = cmd.v3s.ns_config;
			n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
			addrs = cmd.v3s.targ_addrs;
			n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
		} else {
			nsc = cmd.v4.ns_config;
			n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
			addrs = cmd.v4.targ_addrs;
			n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
		}

		/*
		 * For each address we have (and that will fit) fill a target
		 * address struct and combine for NS offload structs with the
		 * solicited node addresses.
		 */
		for (i = 0, c = 0;
		     i < mvmvif->num_target_ipv6_addrs &&
		     i < n_addrs && c < n_nsc; i++) {
			struct in6_addr solicited_addr;
			int j;

			if (skip_tentative &&
			    test_bit(i, mvmvif->tentative_addrs)) {
				num_skipped++;
				continue;
			}

			addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
						  &solicited_addr);
			for (j = 0; j < c; j++)
				if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
						  &solicited_addr) == 0)
					break;
			if (j == c)
				c++;
			addrs[i].addr = mvmvif->target_ipv6_addrs[i];
			addrs[i].config_num = cpu_to_le32(j);
			nsc[j].dest_ipv6_addr = solicited_addr;
			memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
		}

		if (mvmvif->num_target_ipv6_addrs - num_skipped)
			enabled |= IWL_D3_PROTO_IPV6_VALID;

		if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
			cmd.v3s.num_valid_ipv6_addrs =
				cpu_to_le32(i - num_skipped);
		else
			cmd.v4.num_valid_ipv6_addrs =
				cpu_to_le32(i - num_skipped);
	} else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
		bool found = false;

		BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
			     sizeof(mvmvif->target_ipv6_addrs[0]));

		for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
				    IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) {
			if (skip_tentative &&
			    test_bit(i, mvmvif->tentative_addrs))
				continue;

			memcpy(cmd.v2.target_ipv6_addr[i],
			       &mvmvif->target_ipv6_addrs[i],
			       sizeof(cmd.v2.target_ipv6_addr[i]));

			found = true;
		}
		if (found) {
			enabled |= IWL_D3_PROTO_IPV6_VALID;
			memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
		}
	} else {
		bool found = false;
		BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
			     sizeof(mvmvif->target_ipv6_addrs[0]));

		for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
				    IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) {
			if (skip_tentative &&
			    test_bit(i, mvmvif->tentative_addrs))
				continue;

			memcpy(cmd.v1.target_ipv6_addr[i],
			       &mvmvif->target_ipv6_addrs[i],
			       sizeof(cmd.v1.target_ipv6_addr[i]));

			found = true;

Annotation

Implementation Notes