CHECK: Alignment should match open parenthesis
#60: FILE: include/net/xfrm.h:1707:
+struct xfrm_state *xfrm_state_lookup_spi_proto(struct net *net, __be32 spi,
+						u8 proto);

WARNING: line length of 85 exceeds 80 columns
#73: FILE: net/xfrm/xfrm_state.c:1714:
+struct xfrm_state *xfrm_state_lookup_spi_proto(struct net *net, __be32 spi, u8 proto)

WARNING: please, no spaces at the start of a line
#75: FILE: net/xfrm/xfrm_state.c:1716:
+    struct xfrm_state *x;$

WARNING: please, no spaces at the start of a line
#76: FILE: net/xfrm/xfrm_state.c:1717:
+    unsigned int i;$

WARNING: please, no spaces at the start of a line
#78: FILE: net/xfrm/xfrm_state.c:1719:
+    rcu_read_lock();$

WARNING: please, no spaces at the start of a line
#80: FILE: net/xfrm/xfrm_state.c:1721:
+    for (i = 0; i <= net->xfrm.state_hmask; i++) {$

ERROR: code indent should use tabs where possible
#81: FILE: net/xfrm/xfrm_state.c:1722:
+        hlist_for_each_entry_rcu(x, &net->xfrm.state_byspi[i], byspi) {$

WARNING: please, no spaces at the start of a line
#81: FILE: net/xfrm/xfrm_state.c:1722:
+        hlist_for_each_entry_rcu(x, &net->xfrm.state_byspi[i], byspi) {$

WARNING: suspect code indent for conditional statements (8, 12)
#81: FILE: net/xfrm/xfrm_state.c:1722:
+        hlist_for_each_entry_rcu(x, &net->xfrm.state_byspi[i], byspi) {
+            if (x->id.spi == spi && x->id.proto == proto) {

ERROR: code indent should use tabs where possible
#82: FILE: net/xfrm/xfrm_state.c:1723:
+            if (x->id.spi == spi && x->id.proto == proto) {$

WARNING: please, no spaces at the start of a line
#82: FILE: net/xfrm/xfrm_state.c:1723:
+            if (x->id.spi == spi && x->id.proto == proto) {$

ERROR: code indent should use tabs where possible
#83: FILE: net/xfrm/xfrm_state.c:1724:
+                if (!xfrm_state_hold_rcu(x))$

WARNING: please, no spaces at the start of a line
#83: FILE: net/xfrm/xfrm_state.c:1724:
+                if (!xfrm_state_hold_rcu(x))$

WARNING: suspect code indent for conditional statements (16, 20)
#83: FILE: net/xfrm/xfrm_state.c:1724:
+                if (!xfrm_state_hold_rcu(x))
+                    continue;

ERROR: code indent should use tabs where possible
#84: FILE: net/xfrm/xfrm_state.c:1725:
+                    continue;$

WARNING: please, no spaces at the start of a line
#84: FILE: net/xfrm/xfrm_state.c:1725:
+                    continue;$

ERROR: code indent should use tabs where possible
#85: FILE: net/xfrm/xfrm_state.c:1726:
+                rcu_read_unlock();$

WARNING: please, no spaces at the start of a line
#85: FILE: net/xfrm/xfrm_state.c:1726:
+                rcu_read_unlock();$

ERROR: code indent should use tabs where possible
#86: FILE: net/xfrm/xfrm_state.c:1727:
+                return x;$

WARNING: please, no spaces at the start of a line
#86: FILE: net/xfrm/xfrm_state.c:1727:
+                return x;$

ERROR: code indent should use tabs where possible
#87: FILE: net/xfrm/xfrm_state.c:1728:
+            }$

WARNING: please, no spaces at the start of a line
#87: FILE: net/xfrm/xfrm_state.c:1728:
+            }$

ERROR: code indent should use tabs where possible
#88: FILE: net/xfrm/xfrm_state.c:1729:
+        }$

WARNING: please, no spaces at the start of a line
#88: FILE: net/xfrm/xfrm_state.c:1729:
+        }$

WARNING: please, no spaces at the start of a line
#89: FILE: net/xfrm/xfrm_state.c:1730:
+    }$

WARNING: please, no spaces at the start of a line
#91: FILE: net/xfrm/xfrm_state.c:1732:
+    rcu_read_unlock();$

WARNING: please, no spaces at the start of a line
#92: FILE: net/xfrm/xfrm_state.c:1733:
+    return NULL;$

WARNING: line length of 87 exceeds 80 columns
#122: FILE: net/xfrm/xfrm_state.c:2602:
+			x0 = xfrm_state_lookup_spi_proto(net, htonl(spi), x->id.proto);

WARNING: line length of 82 exceeds 80 columns
#132: FILE: net/xfrm/xfrm_state.c:2614:
+			NL_SET_ERR_MSG(extack, "Requested SPI is already in use");

total: 8 errors, 20 warnings, 1 checks, 76 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.

NOTE: Whitespace errors detected.
      You may wish to use scripts/cleanpatch or scripts/cleanfile

Commit fa15b81c0a61 ("xfrm: Duplicate SPI Handling") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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.