From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sun, 24 Mar 2013 23:10:10 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] CAN bus on beaglebone
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To: Davide Faconti <faconti@icarustechnology.com>
Cc: xenomai@xenomai.org

On 03/24/2013 11:01 PM, Davide Faconti wrote:

>> Socket: Protocol not supported
> 
> Is there anyone that as any idea of what is going on and how I could
> fix it?


Hi,

could you try the following patch?

diff --git a/src/skins/posix/rtdm.c b/src/skins/posix/rtdm.c
index aa23737..c6326f0 100644
--- a/src/skins/posix/rtdm.c
+++ b/src/skins/posix/rtdm.c
@@ -87,7 +87,7 @@ int __wrap_socket(int protocol_family, int socket_type, int protocol)
 				protocol_family, socket_type, protocol);
 	if (ret >= 0)
 		ret += __pse51_rtdm_fd_start;
-	else if (ret == -EAFNOSUPPORT || ret == -ENOSYS) {
+	else if (ret == -EAFNOSUPPORT || ret == -EPROTONOSUPPORT || ret == -ENOSYS) {
 		ret = __real_socket(protocol_family, socket_type, protocol);
 
 		if (ret >= __pse51_rtdm_fd_start) {

You need to recompile xenomai user-space support after
applying it.

Regards.

-- 
                                                                Gilles.