Re: [PATCH net-next v17 14/14] net: homa: create Makefile and Kconfig

[kernel test robot <lkp@intel.com>]

Hi John,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/John-Ousterhout/net-homa-define-user-visible-API-for-Homa/20260317-070659
base:   net-next/main
patch link:    https://lore.kernel.org/r/20260316223228.2611-15-ouster%40cs.stanford.edu
patch subject: [PATCH net-next v17 14/14] net: homa: create Makefile and Kconfig
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20260318/202603180241.OVIQpOJ1-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260318/202603180241.OVIQpOJ1-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603180241.OVIQpOJ1-lkp@intel.com/

All errors (new ones prefixed by >>):

>> net/homa/homa_plumbing.c:94:30: error: initialization of 'int (*)(struct sock *, struct msghdr *, size_t,  int)' {aka 'int (*)(struct sock *, struct msghdr *, unsigned int,  int)'} from incompatible pointer type 'int (*)(struct sock *, struct msghdr *, size_t,  int,  int *)' {aka 'int (*)(struct sock *, struct msghdr *, unsigned int,  int,  int *)'} [-Wincompatible-pointer-types]
      94 |         .recvmsg           = homa_recvmsg,
         |                              ^~~~~~~~~~~~
   net/homa/homa_plumbing.c:94:30: note: (near initialization for 'homa_prot.recvmsg')
   In file included from net/homa/homa_plumbing.c:7:
   net/homa/homa_impl.h:402:10: note: 'homa_recvmsg' declared here
     402 | int      homa_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
         |          ^~~~~~~~~~~~
   net/homa/homa_plumbing.c:111:30: error: initialization of 'int (*)(struct sock *, struct msghdr *, size_t,  int)' {aka 'int (*)(struct sock *, struct msghdr *, unsigned int,  int)'} from incompatible pointer type 'int (*)(struct sock *, struct msghdr *, size_t,  int,  int *)' {aka 'int (*)(struct sock *, struct msghdr *, unsigned int,  int,  int *)'} [-Wincompatible-pointer-types]
     111 |         .recvmsg           = homa_recvmsg,
         |                              ^~~~~~~~~~~~
   net/homa/homa_plumbing.c:111:30: note: (near initialization for 'homav6_prot.recvmsg')
   net/homa/homa_impl.h:402:10: note: 'homa_recvmsg' declared here
     402 | int      homa_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
         |          ^~~~~~~~~~~~


vim +94 net/homa/homa_plumbing.c

fda29e883f7618 John Ousterhout 2026-03-16   77  
fda29e883f7618 John Ousterhout 2026-03-16   78  /* This structure also defines functions that handle various operations
fda29e883f7618 John Ousterhout 2026-03-16   79   * on Homa sockets. However, these functions are lower-level than those
fda29e883f7618 John Ousterhout 2026-03-16   80   * in homa_proto_ops: they are specific to the PF_INET or PF_INET6
fda29e883f7618 John Ousterhout 2026-03-16   81   * protocol family, and in many cases they are invoked by functions in
fda29e883f7618 John Ousterhout 2026-03-16   82   * homa_proto_ops. Most of these functions have Homa-specific implementations.
fda29e883f7618 John Ousterhout 2026-03-16   83   */
fda29e883f7618 John Ousterhout 2026-03-16   84  static struct proto homa_prot = {
fda29e883f7618 John Ousterhout 2026-03-16   85  	.name		   = "HOMA",
fda29e883f7618 John Ousterhout 2026-03-16   86  	.owner		   = THIS_MODULE,
fda29e883f7618 John Ousterhout 2026-03-16   87  	.close		   = homa_close,
fda29e883f7618 John Ousterhout 2026-03-16   88  	.connect	   = ip4_datagram_connect,
fda29e883f7618 John Ousterhout 2026-03-16   89  	.init		   = homa_socket,
fda29e883f7618 John Ousterhout 2026-03-16   90  	.destroy	   = homa_sock_destroy,
fda29e883f7618 John Ousterhout 2026-03-16   91  	.setsockopt	   = homa_setsockopt,
fda29e883f7618 John Ousterhout 2026-03-16   92  	.getsockopt	   = homa_getsockopt,
fda29e883f7618 John Ousterhout 2026-03-16   93  	.sendmsg	   = homa_sendmsg,
fda29e883f7618 John Ousterhout 2026-03-16  @94  	.recvmsg	   = homa_recvmsg,
fda29e883f7618 John Ousterhout 2026-03-16   95  	.hash		   = homa_hash,
fda29e883f7618 John Ousterhout 2026-03-16   96  	.unhash		   = homa_unhash,
fda29e883f7618 John Ousterhout 2026-03-16   97  	.obj_size	   = sizeof(struct homa_sock),
fda29e883f7618 John Ousterhout 2026-03-16   98  	.no_autobind       = 1,
fda29e883f7618 John Ousterhout 2026-03-16   99  };
fda29e883f7618 John Ousterhout 2026-03-16  100  

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