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#54: FILE: net/quic/packet.c:22:
+/* Supported QUIC versions and their compatible versions. Used for Compatible Version

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#59: FILE: net/quic/packet.c:27:
+	{ QUIC_VERSION_V1,	QUIC_VERSION_V2,	QUIC_VERSION_V1,	0 },

WARNING: line length of 84 exceeds 80 columns
#60: FILE: net/quic/packet.c:28:
+	{ QUIC_VERSION_V2,	QUIC_VERSION_V2,	QUIC_VERSION_V1,	0 },

WARNING: line length of 93 exceeds 80 columns
#94: FILE: net/quic/packet.c:62:
+/* Parse QUIC version and connection IDs (DCID and SCID) from a Long header packet buffer. */

WARNING: line length of 99 exceeds 80 columns
#95: FILE: net/quic/packet.c:63:
+static int quic_packet_get_version_and_connid(struct quic_conn_id *dcid, struct quic_conn_id *scid,

WARNING: line length of 82 exceeds 80 columns
#149: FILE: net/quic/packet.c:117:
+	/* If PLPMTUD is not enabled, update MSS using the route and ICMP info. */

WARNING: line length of 91 exceeds 80 columns
#160: FILE: net/quic/packet.c:128:
+	/* PLPMTUD is enabled: adjust to smaller PMTU, subtract headers and AEAD tag.  Also

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#178: FILE: net/quic/packet.c:146:
+	/* ICMP embeds the original outgoing QUIC packet, so saddr/daddr are reversed when

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#195: FILE: net/quic/packet.c:163:
+		/* Socket is in use by userspace context.  Defer MTU processing to later via

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#198: FILE: net/quic/packet.c:166:
+		if (!test_and_set_bit(QUIC_MTU_REDUCED_DEFERRED, &sk->sk_tsq_flags))

WARNING: line length of 92 exceeds 80 columns
#268: FILE: net/quic/packet.c:236:
+ * Parses the TLS ClientHello handshake message to find the ALPN (Application Layer Protocol

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#269: FILE: net/quic/packet.c:237:
+ * Negotiation) TLS extension. It validates the TLS ClientHello structure, including version,

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#270: FILE: net/quic/packet.c:238:
+ * random, session ID, cipher suites, compression methods, and extensions. Once the ALPN

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#273: FILE: net/quic/packet.c:241:
+ * Return: 0 on success or no ALPN found, a negative error code on failed parsing.

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#287: FILE: net/quic/packet.c:255:
+	if (len > (u32)length) /* Limit len to handshake message length if larger. */

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#308: FILE: net/quic/packet.c:276:
+	if (!quic_get_int(&p, &len, &length, 2)) /* Read TLS extensions length (2 bytes). */

WARNING: line length of 89 exceeds 80 columns
#312: FILE: net/quic/packet.c:280:
+	while (len > 4) { /* Iterate over extensions to find ALPN (type TLS_EXT_alpn). */

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#332: FILE: net/quic/packet.c:300:
+	if (!found) { /* no ALPN extension found: set alpn->len = 0 and alpn->data = p. */

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#340: FILE: net/quic/packet.c:308:
+	quic_data(alpn, p, length); /* Store ALPN protocols list in alpn->data. */

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#344: FILE: net/quic/packet.c:312:
+			/* Malformed ALPN entry: set alpn->len = 0 and alpn->data = NULL. */

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#359: FILE: net/quic/packet.c:327:
+ * This function processes a QUIC Initial packet to extract the ALPN from the TLS ClientHello

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#360: FILE: net/quic/packet.c:328:
+ * message inside the QUIC CRYPTO frame. It verifies packet type, version compatibility,

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#361: FILE: net/quic/packet.c:329:
+ * decrypts the packet payload, and locates the CRYPTO frame to parse the TLS ClientHello.

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#364: FILE: net/quic/packet.c:332:
+ * Return: 0 on success or no ALPN found, a negative error code on failed parsing.

WARNING: line length of 81 exceeds 80 columns
#380: FILE: net/quic/packet.c:348:
+	if (quic_packet_get_version_and_connid(&dcid, &scid, &version, &p, &len))

WARNING: line length of 88 exceeds 80 columns
#392: FILE: net/quic/packet.c:360:
+	if (!cb->backlog) { /* skb_get() needed as caller will free skb on this path. */

WARNING: line length of 82 exceeds 80 columns
#429: FILE: net/quic/packet.c:397:
+/* Extract the Destination Connection ID (DCID) from a QUIC Long header packet. */

WARNING: line length of 87 exceeds 80 columns
#479: FILE: net/quic/packet.c:447:
+		 * (Currently, only source CIDs of size QUIC_CONN_ID_DEF_LEN are used).

WARNING: line length of 88 exceeds 80 columns
#485: FILE: net/quic/packet.c:453:
+			return quic_conn_id_sk(conn_id); /* Return associated socket. */

WARNING: line length of 94 exceeds 80 columns
#724: FILE: net/quic/protocol.h:56:
+	struct work_struct work;	/* Work scheduled to drain and process backlog_list */

WARNING: line length of 93 exceeds 80 columns
#738: FILE: net/quic/socket.c:29:
+ * This function searches the established (non-listening) QUIC socket table for a socket that

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#739: FILE: net/quic/socket.c:30:
+ * matches the source and dest addresses and, optionally, the dest connection ID (DCID). The

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#740: FILE: net/quic/socket.c:31:
+ * value returned by quic_path_orig_dcid() might be the original dest connection ID from the

WARNING: line length of 93 exceeds 80 columns
#743: FILE: net/quic/socket.c:34:
+ * The DCID is provided from a handshake packet when searching by source connection ID fails,

WARNING: line length of 85 exceeds 80 columns
#744: FILE: net/quic/socket.c:35:
+ * such as when the peer has not yet received server's response and updated the DCID.

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#746: FILE: net/quic/socket.c:37:
+ * Return: A pointer to the matching connected socket, or NULL if no match is found.

WARNING: line length of 92 exceeds 80 columns
#748: FILE: net/quic/socket.c:39:
+struct sock *quic_sock_lookup(struct sk_buff *skb, union quic_addr *sa, union quic_addr *da,

WARNING: line length of 85 exceeds 80 columns
#770: FILE: net/quic/socket.c:61:
+		    (!dcid || !quic_conn_id_cmp(quic_path_orig_dcid(paths), dcid))) {

WARNING: line length of 95 exceeds 80 columns
#775: FILE: net/quic/socket.c:66:
+	/* If the nulls value we got at the end of the iteration is different from the expected

WARNING: line length of 81 exceeds 80 columns
#776: FILE: net/quic/socket.c:67:
+	 * one, we must restart the lookup as the list was modified concurrently.

WARNING: line length of 92 exceeds 80 columns
#789: FILE: net/quic/socket.c:80:
+ * This function searches the QUIC socket table for a listening socket that matches the dest

WARNING: line length of 92 exceeds 80 columns
#790: FILE: net/quic/socket.c:81:
+ * address and port, and the ALPN(s) if presented in the ClientHello.  If multiple listening

WARNING: line length of 90 exceeds 80 columns
#791: FILE: net/quic/socket.c:82:
+ * sockets are bound to the same address, port, and ALPN(s) (e.g., via SO_REUSEPORT), this

WARNING: line length of 84 exceeds 80 columns
#794: FILE: net/quic/socket.c:85:
+ * Return: A pointer to the matching listening socket, or NULL if no match is found.

WARNING: line length of 99 exceeds 80 columns
#796: FILE: net/quic/socket.c:87:
+struct sock *quic_listen_sock_lookup(struct sk_buff *skb, union quic_addr *sa, union quic_addr *da,

WARNING: line length of 86 exceeds 80 columns
#814: FILE: net/quic/socket.c:105:
+	if (!alpns->len) { /* No ALPN entries present or failed to parse the ALPNs. */

WARNING: line length of 95 exceeds 80 columns
#816: FILE: net/quic/socket.c:107:
+			/* If alpns->data != NULL, TLS parsing succeeded but no ALPN was found.

WARNING: line length of 82 exceeds 80 columns
#817: FILE: net/quic/socket.c:108:
+			 * In this case, only match sockets that have no ALPN set.

WARNING: line length of 83 exceeds 80 columns
#820: FILE: net/quic/socket.c:111:
+			if (net == sock_net(tmp) && quic_cmp_sk_addr(tmp, a, sa) &&

WARNING: line length of 94 exceeds 80 columns
#824: FILE: net/quic/socket.c:115:
+				if (!quic_is_any_addr(a)) /* Prefer specific address match. */

WARNING: line length of 82 exceeds 80 columns
#832: FILE: net/quic/socket.c:123:
+	for (p = alpns->data, len = alpns->len; len; len -= length, p += length) {

WARNING: line length of 83 exceeds 80 columns
#837: FILE: net/quic/socket.c:128:
+			if (net == sock_net(tmp) && quic_cmp_sk_addr(tmp, a, sa) &&

WARNING: line length of 95 exceeds 80 columns
#849: FILE: net/quic/socket.c:140:
+	/* If the nulls value we got at the end of the iteration is different from the expected

WARNING: line length of 81 exceeds 80 columns
#850: FILE: net/quic/socket.c:141:
+	 * one, we must restart the lookup as the list was modified concurrently.

WARNING: line length of 99 exceeds 80 columns
#903: FILE: net/quic/socket.h:204:
+struct sock *quic_listen_sock_lookup(struct sk_buff *skb, union quic_addr *sa, union quic_addr *da,

WARNING: line length of 92 exceeds 80 columns
#905: FILE: net/quic/socket.h:206:
+struct sock *quic_sock_lookup(struct sk_buff *skb, union quic_addr *sa, union quic_addr *da,

total: 0 errors, 56 warnings, 0 checks, 824 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 38ecd21cebf8 ("quic: add packet parser base") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 56 warnings, 0 checks, 824 lines checked